From 8e6640f0fe9eebde5a6cc9f1c0a20a289b8ad9c8 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Thu, 3 Jan 2013 09:32:32 +0100 Subject: nss-myhostname: move to subdirectory In order to merge into the systemd repos. --- .gitignore | 24 -- LICENSE | 510 ---------------------------------- Makefile.am | 66 ----- bootstrap.sh | 66 ----- configure.ac | 84 ------ doc/.gitignore | 2 - doc/Makefile.am | 38 --- doc/README.html.in | 166 ----------- doc/style.css | 25 -- ifconf.h | 74 ----- legacy.c | 92 ------ m4/attributes.m4 | 258 ----------------- m4/zp_lynx_doc.m4 | 24 -- netlink.c | 209 -------------- nss-myhostname.c | 451 ------------------------------ src/nss-myhostname/.gitignore | 24 ++ src/nss-myhostname/LICENSE | 510 ++++++++++++++++++++++++++++++++++ src/nss-myhostname/Makefile.am | 66 +++++ src/nss-myhostname/bootstrap.sh | 66 +++++ src/nss-myhostname/configure.ac | 84 ++++++ src/nss-myhostname/doc/.gitignore | 2 + src/nss-myhostname/doc/Makefile.am | 38 +++ src/nss-myhostname/doc/README.html.in | 166 +++++++++++ src/nss-myhostname/doc/style.css | 25 ++ src/nss-myhostname/ifconf.h | 74 +++++ src/nss-myhostname/legacy.c | 92 ++++++ src/nss-myhostname/m4/attributes.m4 | 258 +++++++++++++++++ src/nss-myhostname/m4/zp_lynx_doc.m4 | 24 ++ src/nss-myhostname/netlink.c | 209 ++++++++++++++ src/nss-myhostname/nss-myhostname.c | 451 ++++++++++++++++++++++++++++++ 30 files changed, 2089 insertions(+), 2089 deletions(-) delete mode 100644 .gitignore delete mode 100644 LICENSE delete mode 100644 Makefile.am delete mode 100755 bootstrap.sh delete mode 100644 configure.ac delete mode 100644 doc/.gitignore delete mode 100644 doc/Makefile.am delete mode 100644 doc/README.html.in delete mode 100644 doc/style.css delete mode 100644 ifconf.h delete mode 100644 legacy.c delete mode 100644 m4/attributes.m4 delete mode 100644 m4/zp_lynx_doc.m4 delete mode 100644 netlink.c delete mode 100644 nss-myhostname.c create mode 100644 src/nss-myhostname/.gitignore create mode 100644 src/nss-myhostname/LICENSE create mode 100644 src/nss-myhostname/Makefile.am create mode 100755 src/nss-myhostname/bootstrap.sh create mode 100644 src/nss-myhostname/configure.ac create mode 100644 src/nss-myhostname/doc/.gitignore create mode 100644 src/nss-myhostname/doc/Makefile.am create mode 100644 src/nss-myhostname/doc/README.html.in create mode 100644 src/nss-myhostname/doc/style.css create mode 100644 src/nss-myhostname/ifconf.h create mode 100644 src/nss-myhostname/legacy.c create mode 100644 src/nss-myhostname/m4/attributes.m4 create mode 100644 src/nss-myhostname/m4/zp_lynx_doc.m4 create mode 100644 src/nss-myhostname/netlink.c create mode 100644 src/nss-myhostname/nss-myhostname.c diff --git a/.gitignore b/.gitignore deleted file mode 100644 index b35d629834..0000000000 --- a/.gitignore +++ /dev/null @@ -1,24 +0,0 @@ -README -.deps -.libs -*.cache -configure -Makefile -stamp-* -*.la -*.lo -*.log -*.so.2 -Makefile.in -aclocal.m4 -config.guess -config.h -config.h.in -config.rpath -config.status -config.sub -depcomp -install-sh -libtool -ltmain.sh -missing diff --git a/LICENSE b/LICENSE deleted file mode 100644 index 2d2d780e60..0000000000 --- a/LICENSE +++ /dev/null @@ -1,510 +0,0 @@ - - GNU LESSER GENERAL PUBLIC LICENSE - Version 2.1, February 1999 - - Copyright (C) 1991, 1999 Free Software Foundation, Inc. - 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - -[This is the first released version of the Lesser GPL. It also counts - as the successor of the GNU Library Public License, version 2, hence - the version number 2.1.] - - Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. By contrast, the GNU General Public -Licenses are intended to guarantee your freedom to share and change -free software--to make sure the software is free for all its users. - - This license, the Lesser General Public License, applies to some -specially designated software packages--typically libraries--of the -Free Software Foundation and other authors who decide to use it. You -can use it too, but we suggest you first think carefully about whether -this license or the ordinary General Public License is the better -strategy to use in any particular case, based on the explanations -below. - - When we speak of free software, we are referring to freedom of use, -not price. Our General Public Licenses are designed to make sure that -you have the freedom to distribute copies of free software (and charge -for this service if you wish); that you receive source code or can get -it if you want it; that you can change the software and use pieces of -it in new free programs; and that you are informed that you can do -these things. - - To protect your rights, we need to make restrictions that forbid -distributors to deny you these rights or to ask you to surrender these -rights. These restrictions translate to certain responsibilities for -you if you distribute copies of the library or if you modify it. - - For example, if you distribute copies of the library, whether gratis -or for a fee, you must give the recipients all the rights that we gave -you. You must make sure that they, too, receive or can get the source -code. If you link other code with the library, you must provide -complete object files to the recipients, so that they can relink them -with the library after making changes to the library and recompiling -it. And you must show them these terms so they know their rights. - - We protect your rights with a two-step method: (1) we copyright the -library, and (2) we offer you this license, which gives you legal -permission to copy, distribute and/or modify the library. - - To protect each distributor, we want to make it very clear that -there is no warranty for the free library. Also, if the library is -modified by someone else and passed on, the recipients should know -that what they have is not the original version, so that the original -author's reputation will not be affected by problems that might be -introduced by others. - - Finally, software patents pose a constant threat to the existence of -any free program. We wish to make sure that a company cannot -effectively restrict the users of a free program by obtaining a -restrictive license from a patent holder. Therefore, we insist that -any patent license obtained for a version of the library must be -consistent with the full freedom of use specified in this license. - - Most GNU software, including some libraries, is covered by the -ordinary GNU General Public License. This license, the GNU Lesser -General Public License, applies to certain designated libraries, and -is quite different from the ordinary General Public License. We use -this license for certain libraries in order to permit linking those -libraries into non-free programs. - - When a program is linked with a library, whether statically or using -a shared library, the combination of the two is legally speaking a -combined work, a derivative of the original library. The ordinary -General Public License therefore permits such linking only if the -entire combination fits its criteria of freedom. The Lesser General -Public License permits more lax criteria for linking other code with -the library. - - We call this license the "Lesser" General Public License because it -does Less to protect the user's freedom than the ordinary General -Public License. It also provides other free software developers Less -of an advantage over competing non-free programs. These disadvantages -are the reason we use the ordinary General Public License for many -libraries. However, the Lesser license provides advantages in certain -special circumstances. - - For example, on rare occasions, there may be a special need to -encourage the widest possible use of a certain library, so that it -becomes a de-facto standard. To achieve this, non-free programs must -be allowed to use the library. A more frequent case is that a free -library does the same job as widely used non-free libraries. In this -case, there is little to gain by limiting the free library to free -software only, so we use the Lesser General Public License. - - In other cases, permission to use a particular library in non-free -programs enables a greater number of people to use a large body of -free software. For example, permission to use the GNU C Library in -non-free programs enables many more people to use the whole GNU -operating system, as well as its variant, the GNU/Linux operating -system. - - Although the Lesser General Public License is Less protective of the -users' freedom, it does ensure that the user of a program that is -linked with the Library has the freedom and the wherewithal to run -that program using a modified version of the Library. - - The precise terms and conditions for copying, distribution and -modification follow. Pay close attention to the difference between a -"work based on the library" and a "work that uses the library". The -former contains code derived from the library, whereas the latter must -be combined with the library in order to run. - - GNU LESSER GENERAL PUBLIC LICENSE - TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION - - 0. This License Agreement applies to any software library or other -program which contains a notice placed by the copyright holder or -other authorized party saying it may be distributed under the terms of -this Lesser General Public License (also called "this License"). -Each licensee is addressed as "you". - - A "library" means a collection of software functions and/or data -prepared so as to be conveniently linked with application programs -(which use some of those functions and data) to form executables. - - The "Library", below, refers to any such software library or work -which has been distributed under these terms. A "work based on the -Library" means either the Library or any derivative work under -copyright law: that is to say, a work containing the Library or a -portion of it, either verbatim or with modifications and/or translated -straightforwardly into another language. (Hereinafter, translation is -included without limitation in the term "modification".) - - "Source code" for a work means the preferred form of the work for -making modifications to it. For a library, complete source code means -all the source code for all modules it contains, plus any associated -interface definition files, plus the scripts used to control -compilation and installation of the library. - - Activities other than copying, distribution and modification are not -covered by this License; they are outside its scope. The act of -running a program using the Library is not restricted, and output from -such a program is covered only if its contents constitute a work based -on the Library (independent of the use of the Library in a tool for -writing it). Whether that is true depends on what the Library does -and what the program that uses the Library does. - - 1. You may copy and distribute verbatim copies of the Library's -complete source code as you receive it, in any medium, provided that -you conspicuously and appropriately publish on each copy an -appropriate copyright notice and disclaimer of warranty; keep intact -all the notices that refer to this License and to the absence of any -warranty; and distribute a copy of this License along with the -Library. - - You may charge a fee for the physical act of transferring a copy, -and you may at your option offer warranty protection in exchange for a -fee. - - 2. You may modify your copy or copies of the Library or any portion -of it, thus forming a work based on the Library, and copy and -distribute such modifications or work under the terms of Section 1 -above, provided that you also meet all of these conditions: - - a) The modified work must itself be a software library. - - b) You must cause the files modified to carry prominent notices - stating that you changed the files and the date of any change. - - c) You must cause the whole of the work to be licensed at no - charge to all third parties under the terms of this License. - - d) If a facility in the modified Library refers to a function or a - table of data to be supplied by an application program that uses - the facility, other than as an argument passed when the facility - is invoked, then you must make a good faith effort to ensure that, - in the event an application does not supply such function or - table, the facility still operates, and performs whatever part of - its purpose remains meaningful. - - (For example, a function in a library to compute square roots has - a purpose that is entirely well-defined independent of the - application. Therefore, Subsection 2d requires that any - application-supplied function or table used by this function must - be optional: if the application does not supply it, the square - root function must still compute square roots.) - -These requirements apply to the modified work as a whole. If -identifiable sections of that work are not derived from the Library, -and can be reasonably considered independent and separate works in -themselves, then this License, and its terms, do not apply to those -sections when you distribute them as separate works. But when you -distribute the same sections as part of a whole which is a work based -on the Library, the distribution of the whole must be on the terms of -this License, whose permissions for other licensees extend to the -entire whole, and thus to each and every part regardless of who wrote -it. - -Thus, it is not the intent of this section to claim rights or contest -your rights to work written entirely by you; rather, the intent is to -exercise the right to control the distribution of derivative or -collective works based on the Library. - -In addition, mere aggregation of another work not based on the Library -with the Library (or with a work based on the Library) on a volume of -a storage or distribution medium does not bring the other work under -the scope of this License. - - 3. You may opt to apply the terms of the ordinary GNU General Public -License instead of this License to a given copy of the Library. To do -this, you must alter all the notices that refer to this License, so -that they refer to the ordinary GNU General Public License, version 2, -instead of to this License. (If a newer version than version 2 of the -ordinary GNU General Public License has appeared, then you can specify -that version instead if you wish.) Do not make any other change in -these notices. - - Once this change is made in a given copy, it is irreversible for -that copy, so the ordinary GNU General Public License applies to all -subsequent copies and derivative works made from that copy. - - This option is useful when you wish to copy part of the code of -the Library into a program that is not a library. - - 4. You may copy and distribute the Library (or a portion or -derivative of it, under Section 2) in object code or executable form -under the terms of Sections 1 and 2 above provided that you accompany -it with the complete corresponding machine-readable source code, which -must be distributed under the terms of Sections 1 and 2 above on a -medium customarily used for software interchange. - - If distribution of object code is made by offering access to copy -from a designated place, then offering equivalent access to copy the -source code from the same place satisfies the requirement to -distribute the source code, even though third parties are not -compelled to copy the source along with the object code. - - 5. A program that contains no derivative of any portion of the -Library, but is designed to work with the Library by being compiled or -linked with it, is called a "work that uses the Library". Such a -work, in isolation, is not a derivative work of the Library, and -therefore falls outside the scope of this License. - - However, linking a "work that uses the Library" with the Library -creates an executable that is a derivative of the Library (because it -contains portions of the Library), rather than a "work that uses the -library". The executable is therefore covered by this License. -Section 6 states terms for distribution of such executables. - - When a "work that uses the Library" uses material from a header file -that is part of the Library, the object code for the work may be a -derivative work of the Library even though the source code is not. -Whether this is true is especially significant if the work can be -linked without the Library, or if the work is itself a library. The -threshold for this to be true is not precisely defined by law. - - If such an object file uses only numerical parameters, data -structure layouts and accessors, and small macros and small inline -functions (ten lines or less in length), then the use of the object -file is unrestricted, regardless of whether it is legally a derivative -work. (Executables containing this object code plus portions of the -Library will still fall under Section 6.) - - Otherwise, if the work is a derivative of the Library, you may -distribute the object code for the work under the terms of Section 6. -Any executables containing that work also fall under Section 6, -whether or not they are linked directly with the Library itself. - - 6. As an exception to the Sections above, you may also combine or -link a "work that uses the Library" with the Library to produce a -work containing portions of the Library, and distribute that work -under terms of your choice, provided that the terms permit -modification of the work for the customer's own use and reverse -engineering for debugging such modifications. - - You must give prominent notice with each copy of the work that the -Library is used in it and that the Library and its use are covered by -this License. You must supply a copy of this License. If the work -during execution displays copyright notices, you must include the -copyright notice for the Library among them, as well as a reference -directing the user to the copy of this License. Also, you must do one -of these things: - - a) Accompany the work with the complete corresponding - machine-readable source code for the Library including whatever - changes were used in the work (which must be distributed under - Sections 1 and 2 above); and, if the work is an executable linked - with the Library, with the complete machine-readable "work that - uses the Library", as object code and/or source code, so that the - user can modify the Library and then relink to produce a modified - executable containing the modified Library. (It is understood - that the user who changes the contents of definitions files in the - Library will not necessarily be able to recompile the application - to use the modified definitions.) - - b) Use a suitable shared library mechanism for linking with the - Library. A suitable mechanism is one that (1) uses at run time a - copy of the library already present on the user's computer system, - rather than copying library functions into the executable, and (2) - will operate properly with a modified version of the library, if - the user installs one, as long as the modified version is - interface-compatible with the version that the work was made with. - - c) Accompany the work with a written offer, valid for at least - three years, to give the same user the materials specified in - Subsection 6a, above, for a charge no more than the cost of - performing this distribution. - - d) If distribution of the work is made by offering access to copy - from a designated place, offer equivalent access to copy the above - specified materials from the same place. - - e) Verify that the user has already received a copy of these - materials or that you have already sent this user a copy. - - For an executable, the required form of the "work that uses the -Library" must include any data and utility programs needed for -reproducing the executable from it. However, as a special exception, -the materials to be distributed need not include anything that is -normally distributed (in either source or binary form) with the major -components (compiler, kernel, and so on) of the operating system on -which the executable runs, unless that component itself accompanies -the executable. - - It may happen that this requirement contradicts the license -restrictions of other proprietary libraries that do not normally -accompany the operating system. Such a contradiction means you cannot -use both them and the Library together in an executable that you -distribute. - - 7. You may place library facilities that are a work based on the -Library side-by-side in a single library together with other library -facilities not covered by this License, and distribute such a combined -library, provided that the separate distribution of the work based on -the Library and of the other library facilities is otherwise -permitted, and provided that you do these two things: - - a) Accompany the combined library with a copy of the same work - based on the Library, uncombined with any other library - facilities. This must be distributed under the terms of the - Sections above. - - b) Give prominent notice with the combined library of the fact - that part of it is a work based on the Library, and explaining - where to find the accompanying uncombined form of the same work. - - 8. You may not copy, modify, sublicense, link with, or distribute -the Library except as expressly provided under this License. Any -attempt otherwise to copy, modify, sublicense, link with, or -distribute the Library is void, and will automatically terminate your -rights under this License. However, parties who have received copies, -or rights, from you under this License will not have their licenses -terminated so long as such parties remain in full compliance. - - 9. You are not required to accept this License, since you have not -signed it. However, nothing else grants you permission to modify or -distribute the Library or its derivative works. These actions are -prohibited by law if you do not accept this License. Therefore, by -modifying or distributing the Library (or any work based on the -Library), you indicate your acceptance of this License to do so, and -all its terms and conditions for copying, distributing or modifying -the Library or works based on it. - - 10. Each time you redistribute the Library (or any work based on the -Library), the recipient automatically receives a license from the -original licensor to copy, distribute, link with or modify the Library -subject to these terms and conditions. You may not impose any further -restrictions on the recipients' exercise of the rights granted herein. -You are not responsible for enforcing compliance by third parties with -this License. - - 11. If, as a consequence of a court judgment or allegation of patent -infringement or for any other reason (not limited to patent issues), -conditions are imposed on you (whether by court order, agreement or -otherwise) that contradict the conditions of this License, they do not -excuse you from the conditions of this License. If you cannot -distribute so as to satisfy simultaneously your obligations under this -License and any other pertinent obligations, then as a consequence you -may not distribute the Library at all. For example, if a patent -license would not permit royalty-free redistribution of the Library by -all those who receive copies directly or indirectly through you, then -the only way you could satisfy both it and this License would be to -refrain entirely from distribution of the Library. - -If any portion of this section is held invalid or unenforceable under -any particular circumstance, the balance of the section is intended to -apply, and the section as a whole is intended to apply in other -circumstances. - -It is not the purpose of this section to induce you to infringe any -patents or other property right claims or to contest validity of any -such claims; this section has the sole purpose of protecting the -integrity of the free software distribution system which is -implemented by public license practices. Many people have made -generous contributions to the wide range of software distributed -through that system in reliance on consistent application of that -system; it is up to the author/donor to decide if he or she is willing -to distribute software through any other system and a licensee cannot -impose that choice. - -This section is intended to make thoroughly clear what is believed to -be a consequence of the rest of this License. - - 12. If the distribution and/or use of the Library is restricted in -certain countries either by patents or by copyrighted interfaces, the -original copyright holder who places the Library under this License -may add an explicit geographical distribution limitation excluding those -countries, so that distribution is permitted only in or among -countries not thus excluded. In such case, this License incorporates -the limitation as if written in the body of this License. - - 13. The Free Software Foundation may publish revised and/or new -versions of the Lesser General Public License from time to time. -Such new versions will be similar in spirit to the present version, -but may differ in detail to address new problems or concerns. - -Each version is given a distinguishing version number. If the Library -specifies a version number of this License which applies to it and -"any later version", you have the option of following the terms and -conditions either of that version or of any later version published by -the Free Software Foundation. If the Library does not specify a -license version number, you may choose any version ever published by -the Free Software Foundation. - - 14. If you wish to incorporate parts of the Library into other free -programs whose distribution conditions are incompatible with these, -write to the author to ask for permission. For software which is -copyrighted by the Free Software Foundation, write to the Free -Software Foundation; we sometimes make exceptions for this. Our -decision will be guided by the two goals of preserving the free status -of all derivatives of our free software and of promoting the sharing -and reuse of software generally. - - NO WARRANTY - - 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO -WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. -EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR -OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY -KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR -PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE -LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME -THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. - - 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN -WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY -AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU -FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR -CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE -LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING -RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A -FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF -SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH -DAMAGES. - - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Libraries - - If you develop a new library, and you want it to be of the greatest -possible use to the public, we recommend making it free software that -everyone can redistribute and change. You can do so by permitting -redistribution under these terms (or, alternatively, under the terms -of the ordinary General Public License). - - To apply these terms, attach the following notices to the library. -It is safest to attach them to the start of each source file to most -effectively convey the exclusion of warranty; and each file should -have at least the "copyright" line and a pointer to where the full -notice is found. - - - - Copyright (C) - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - -Also add information on how to contact you by electronic and paper mail. - -You should also get your employer (if you work as a programmer) or -your school, if any, to sign a "copyright disclaimer" for the library, -if necessary. Here is a sample; alter the names: - - Yoyodyne, Inc., hereby disclaims all copyright interest in the - library `Frob' (a library for tweaking knobs) written by James - Random Hacker. - - , 1 April 1990 - Ty Coon, President of Vice - -That's all there is to it! - - diff --git a/Makefile.am b/Makefile.am deleted file mode 100644 index f82b8d46e2..0000000000 --- a/Makefile.am +++ /dev/null @@ -1,66 +0,0 @@ -# This file is part of nss-myhostname. -# -# Copyright 2008 Lennart Poettering -# -# nss-myhostname is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public License -# as published by the Free Software Foundation, either version 2.1 of -# the License, or (at your option) any later version. -# -# nss-myhostname is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with nss-myhostname. If not, If not, see -# . - -ACLOCAL_AMFLAGS = -I m4 - -lib_LTLIBRARIES = libnss_myhostname.la - -EXTRA_DIST=bootstrap.sh README LICENSE -SUBDIRS=doc - -AM_CPPFLAGS = -include $(top_builddir)/config.h - -MAINTAINERCLEANFILES=README -noinst_DATA = README - -README: - rm -f README - $(MAKE) -C doc README - cd $(srcdir) && ln -s doc/README README - -homepage: all dist - test -d $$HOME/homepage/private - mkdir -p $$HOME/homepage/private/projects/nss-myhostname - cp nss-myhostname-@PACKAGE_VERSION@.tar.gz doc/README.html doc/style.css $$HOME/homepage/private/projects/nss-myhostname - ln -sf README.html $$HOME/homepage/private/projects/nss-myhostname/index.html - -.PHONY: homepage - -libnss_myhostname_la_SOURCES = \ - nss-myhostname.c \ - ifconf.h - -if LEGACY -libnss_myhostname_la_SOURCES += legacy.c -else -libnss_myhostname_la_SOURCES += netlink.c -endif - -libnss_myhostname_la_LDFLAGS = \ - -avoid-version \ - -module \ - -export-dynamic \ - -shrext .so.2 - -install-exec-hook: - rm -f $(DESTDIR)$(libdir)/libnss_myhostname.la - rm -f $(DESTDIR)$(libdir)/libnss_myhostname_minimal.la - -uninstall-hook: - rm -f $(DESTDIR)$(libdir)/libnss_myhostname.so.2 - rm -f $(DESTDIR)$(libdir)/libnss_myhostname_minimal.so.2 diff --git a/bootstrap.sh b/bootstrap.sh deleted file mode 100755 index d224f31fb5..0000000000 --- a/bootstrap.sh +++ /dev/null @@ -1,66 +0,0 @@ -#!/bin/bash - -# This file is part of nss-myhostname. -# -# Copyright 2008 Lennart Poettering -# -# nss-myhostname is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public License -# as published by the Free Software Foundation, either version 2.1 of -# the License, or (at your option) any later version. -# -# nss-myhostname is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with nss-myhostname. If not, If not, see -# . - -VERSION=1.9 - -run_versioned() { - local P - local V - - V=$(echo "$2" | sed -e 's,\.,,g') - - if [ -e "`which $1$V 2> /dev/null`" ] ; then - P="$1$V" - else - if [ -e "`which $1-$2 2> /dev/null`" ] ; then - P="$1-$2" - else - P="$1" - fi - fi - - shift 2 - "$P" "$@" -} - -set -ex - -if [ "x$1" = "xam" ] ; then - run_versioned automake "$VERSION" -a -c --foreign - ./config.status -else - rm -rf autom4te.cache - rm -f config.cache - - touch config.rpath - test "x$LIBTOOLIZE" = "x" && LIBTOOLIZE=libtoolize - - mkdir -p m4 - "$LIBTOOLIZE" -c --force - run_versioned aclocal "$VERSION" -I m4 - run_versioned autoconf 2.59 -Wall - run_versioned autoheader 2.59 - run_versioned automake "$VERSION" --copy --foreign --add-missing - - if test "x$NOCONFIGURE" = "x"; then - CFLAGS="-g -O0" ./configure --sysconfdir=/etc --localstatedir=/var "$@" - make clean - fi -fi diff --git a/configure.ac b/configure.ac deleted file mode 100644 index 30ebc44a80..0000000000 --- a/configure.ac +++ /dev/null @@ -1,84 +0,0 @@ -# -*- Autoconf -*- -# Process this file with autoconf to produce a configure script. - -# This file is part of nss-myhostname. -# -# Copyright 2008 Lennart Poettering -# -# nss-myhostname is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public License -# as published by the Free Software Foundation, either version 2.1 of -# the License, or (at your option) any later version. -# -# nss-myhostname is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with nss-myhostname. If not, If not, see -# . - -AC_PREREQ(2.62) -AC_INIT([nss-myhostname],[0.3],[mzzlubfganzr (at) 0pointer (dot) de]) -AC_CONFIG_SRCDIR([nss-myhostname.c]) -AC_CONFIG_HEADERS([config.h]) -AC_CONFIG_MACRO_DIR(m4) -AC_USE_SYSTEM_EXTENSIONS -AC_SYS_LARGEFILE - -AM_INIT_AUTOMAKE([foreign 1.9 -Wall -Wno-portability silent-rules tar-pax subdir-objects dist-bzip2]) - -AC_SUBST(PACKAGE_URL, [http://0pointer.de/lennart/projects/nss-myhostname/]) - -ac_default_prefix="/" - -AC_CANONICAL_HOST -case "$host_os" in - linux*) legacy=false ;; - *) legacy=true ;; -esac -AM_CONDITIONAL([LEGACY], [test x$legacy = xtrue]) - -# Checks for programs. -AC_PROG_CC -AC_PROG_CC_C99 -AC_PROG_CPP - -AC_PROG_INSTALL -AC_PROG_LN_S -AC_PROG_MAKE_SET - -# GCC flags - -DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter -ffast-math -fvisibility=hidden -fdiagnostics-show-option" - -for flag in $DESIRED_FLAGS ; do - CC_CHECK_CFLAGS([$flag], [CFLAGS="$CFLAGS $flag"]) -done - -# libtool stuff -AC_DISABLE_STATIC -LT_PREREQ(2.2) -LT_INIT - -# Checks for header files. -AC_HEADER_STDC -AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h unistd.h nss.h sys/ioctl.h]) - -# Checks for typedefs, structures, and compiler characteristics. -AC_C_CONST -AC_TYPE_SIZE_T -AC_HEADER_TIME - -# Checks for library functions. -AC_FUNC_MALLOC -AC_FUNC_SELECT_ARGTYPES -AC_CHECK_FUNCS([gethostbyaddr gethostbyname gettimeofday inet_ntoa memset select socket strcspn strdup strerror strncasecmp strcasecmp strspn]) - -# LYNX documentation generation -ZP_LYNX_DOC - -AC_CONFIG_FILES([Makefile doc/Makefile doc/README.html ]) - -AC_OUTPUT diff --git a/doc/.gitignore b/doc/.gitignore deleted file mode 100644 index bc63974b07..0000000000 --- a/doc/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -README -README.html diff --git a/doc/Makefile.am b/doc/Makefile.am deleted file mode 100644 index 4f773ac2c6..0000000000 --- a/doc/Makefile.am +++ /dev/null @@ -1,38 +0,0 @@ -# This file is part of nss-myhostname. -# -# Copyright 2008 Lennart Poettering -# -# nss-myhostname is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public License -# as published by the Free Software Foundation, either version 2.1 of -# the License, or (at your option) any later version. -# -# nss-myhostname is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with nss-myhostname. If not, If not, see -# . - -dist_html_DATA = README.html style.css -EXTRA_DIST = README.html.in - -MAINTAINERCLEANFILES = README.html -CLEANFILES = - -if USE_LYNX -dist_doc_DATA = README -MAINTAINERCLEANFILES += README - -README: README.html - lynx --dump $^ | sed 's,file://localhost/.*/doc/README.html,README,' > $@ - -CLEANFILES += README -endif - -tidy: README.html - tidy -qe < README.html ; true - -.PHONY: tidy diff --git a/doc/README.html.in b/doc/README.html.in deleted file mode 100644 index f78618298c..0000000000 --- a/doc/README.html.in +++ /dev/null @@ -1,166 +0,0 @@ - - - - - -nss-myhostname @PACKAGE_VERSION@ - - - - -

nss-myhostname @PACKAGE_VERSION@

- -

Copyright 2005-2011 Lennart Poettering <@PACKAGE_BUGREPORT@>

- - - -

License

- -

This program is free software; you can redistribute it and/or -modify it under the terms of the GNU Lesser General Public License as -published by the Free Software Foundation, either version 2.1 of the -License, or (at your option) any later version.

- -

This program is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -Lesser General Public License for more details.

- -

News

- -
Mon May 9 2011:
- -

Version -0.3 released. Changes include: Always return locally configured IP -addresses first, use 127.0.0.2/::1 only as fallback if no addresses -are configured.

- -
Mon Oct 27 2008:
- -

Version 0.2 -released. Changes include: Update for IPv6 and newest glibc NSS interfaces

- -
Sat Nov 19 2005:
- -

Version 0.1 -released. Initial release.

- -

Overview

- -

nss-myhostname is a plugin for the GNU Name Service Switch -(NSS) functionality of the GNU C Library (glibc) providing -host name resolution for the locally configured system hostname as -returned by gethostname(2). Various software relies on an -always resolvable local host name. When using dynamic hostnames this -is usually achieved by patching /etc/hosts at the same time -as changing the host name. This however is not ideal since it requires -a writable /etc file system and is fragile because the file -might be edited by the administrator at the same -time. nss-myhostname simply returns all locally configure -public IP addresses, or -- if none are configured -- the IPv4 -address 127.0.0.2 (wich is on the local loopback) and the -IPv6 address ::1 (which is the local host) for whatever -system hostname is configured locally. Patching /etc/hosts -is thus no longer necessary.

- -

Current Status

- -

It works!

- -

Documentation

- -

After compiling and installing nss-myhostname you'll find a -new NSS modules in /lib:

-
    -
  • libnss_myhostname.so.2
    • -
- -

To activate the NSS modules you have to edit -/etc/nsswitch.conf and add myhostname to the -line starting with "hosts:". On Debian this looks like -this:

- -
# /etc/nsswitch.conf
-
-passwd:         compat
-group:          compat
-shadow:         compat
-
-hosts:          files dns myhostname
-networks:       files
-
-protocols:      db files
-services:       db files
-ethers:         db files
-rpc:            db files
-
-netgroup:       nis
- -

That's it. You should now always be able to resolve your local -system hostname. For a quick check -use glibc's getent tool: - -

$ getent ahosts `hostname`
-::1             STREAM omega
-::1             DGRAM
-::1             RAW
-127.0.0.2       STREAM
-127.0.0.2       DGRAM
-127.0.0.2       RAW
-
- -

In this case the local host name is omega.

- -

It is recommended to put myhostname last in -the nsswitch.conf line to make sure that this mapping is only -used as fallback, and any DNS or /etc/hosts based mapping takes -precedence.

- -

Requirements

- -

nss-myhostname uses NSS interfaces that are specific to modern glibc's.

- -

nss-myhostname was developed and tested on Fedora 15 from -May 2011, it should work on most other Linux distributions since it -uses GNU autoconf and GNU libtool for source code configuration and -shared library management.

- -

Installation

- -

As this package is made with the GNU autotools you should run -./configure inside the distribution directory for configuring -the source tree. After that you should run make for -compilation and make install (as root) for installation of -nss-myhostname.

- -

Acknowledgements

- -

None so far.

- -

Download

- -

The newest release is always available from @PACKAGE_URL@

- -

The current release is @PACKAGE_VERSION@

- -

Get nss-myhostname's development sources from the GIT repository (gitweb):

- -
git clone git://git.0pointer.de/nss-myhostname
- -
-
Lennart Poettering <@PACKAGE_BUGREPORT@>, May 2011
- - - diff --git a/doc/style.css b/doc/style.css deleted file mode 100644 index 5cc21fd510..0000000000 --- a/doc/style.css +++ /dev/null @@ -1,25 +0,0 @@ -/*** - This file is part of nss-myhostname. - - Copyright 2008 Lennart Poettering - - nss-myhostname is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License - as published by the Free Software Foundation, either version 2.1 - of the License, or (at your option) any later version. - - nss-myhostname is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with nss-myhostname. If not, If not, see - . -***/ - -body { color: black; background-color: white; } -a:link, a:visited { color: #900000; } -div.news-date { font-size: 80%; font-style: italic; } -pre { background-color: #f0f0f0; padding: 0.4cm; } -.grey { color: #8f8f8f; font-size: 80%; } diff --git a/ifconf.h b/ifconf.h deleted file mode 100644 index 6b2c83f91e..0000000000 --- a/ifconf.h +++ /dev/null @@ -1,74 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#ifndef fooifconfhfoo -#define fooifconfhfoo - -#include - -/*** - This file is part of nss-myhostname. - - Copyright 2008-2011 Lennart Poettering - - nss-myhostname is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License - as published by the Free Software Foundation; either version 2.1 of - the License, or (at your option) any later version. - - nss-myhostname is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with nss-myhostname; If not, see - . -***/ - -#include -#include -#include - -struct address { - unsigned char family; - uint8_t address[16]; - unsigned char scope; - int ifindex; -}; - -#define _public_ __attribute__ ((visibility("default"))) -#define _hidden_ __attribute__ ((visibility("hidden"))) - -int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_; - -static inline size_t PROTO_ADDRESS_SIZE(int proto) { - assert(proto == AF_INET || proto == AF_INET6); - - return proto == AF_INET6 ? 16 : 4; -} - -static inline int address_compare(const void *_a, const void *_b) { - const struct address *a = _a, *b = _b; - - /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */ - - if (a->scope < b->scope) - return -1; - if (a->scope > b->scope) - return 1; - - if (a->family == AF_INET && b->family == AF_INET6) - return -1; - if (a->family == AF_INET6 && b->family == AF_INET) - return 1; - - if (a->ifindex < b->ifindex) - return -1; - if (a->ifindex > b->ifindex) - return 1; - - return 0; -} - - -#endif diff --git a/legacy.c b/legacy.c deleted file mode 100644 index 9c0bcadb65..0000000000 --- a/legacy.c +++ /dev/null @@ -1,92 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of nss-myhostname. - - Copyright 2008-2011 Lennart Poettering - Copyright 2011 Robert millan - - nss-myhostname is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License - as published by the Free Software Foundation; either version 2.1 of - the License, or (at your option) any later version. - - nss-myhostname is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with nss-myhostname; If not, see - . -***/ - -#include -#include -#include -#include -#include -#include - -#include "ifconf.h" - -int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) { - struct address *list = NULL; - unsigned n_list = 0; - struct ifaddrs *ifa = NULL; - int r = 1; - struct ifaddrs *i; - int ifindex = 0; - - if (getifaddrs(&ifa) == -1) { - r = -errno; - goto finish; - } - - for (i = ifa; i != NULL; i = i->ifa_next) { - int af; - const void *cp; - struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) i->ifa_addr; - struct sockaddr_in *in = (struct sockaddr_in *) i->ifa_addr; - - if (! i->ifa_addr) - continue; - - af = i->ifa_addr->sa_family; - - if (af != AF_INET && af != AF_INET6) - continue; - - list = realloc(list, (n_list+1) * sizeof(struct address)); - if (!list) { - r = -ENOMEM; - goto finish; - } - - if (af == AF_INET6) - cp = &in6->sin6_addr; - else - cp = &in->sin_addr; - - list[n_list].family = af; - list[n_list].scope = 0; - memcpy(list[n_list].address, cp, PROTO_ADDRESS_SIZE(af)); - list[n_list].ifindex = ifindex++; - n_list++; - } - -finish: - if (ifa) - freeifaddrs(ifa); - - if (r < 0) - free(list); - else { - qsort(list, n_list, sizeof(struct address), address_compare); - - *_list = list; - *_n_list = n_list; - } - - return r; -} diff --git a/m4/attributes.m4 b/m4/attributes.m4 deleted file mode 100644 index 9c4a0c89a5..0000000000 --- a/m4/attributes.m4 +++ /dev/null @@ -1,258 +0,0 @@ -dnl Macros to check the presence of generic (non-typed) symbols. -dnl Copyright (c) 2006-2007 Diego Pettenò -dnl Copyright (c) 2006-2007 xine project -dnl -dnl This program is free software; you can redistribute it and/or modify -dnl it under the terms of the GNU General Public License as published by -dnl the Free Software Foundation; either version 2, or (at your option) -dnl any later version. -dnl -dnl This program is distributed in the hope that it will be useful, -dnl but WITHOUT ANY WARRANTY; without even the implied warranty of -dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -dnl GNU General Public License for more details. -dnl -dnl You should have received a copy of the GNU General Public License -dnl along with this program; if not, write to the Free Software -dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -dnl 02110-1301, USA. -dnl -dnl As a special exception, the copyright owners of the -dnl macro gives unlimited permission to copy, distribute and modify the -dnl configure scripts that are the output of Autoconf when processing the -dnl Macro. You need not follow the terms of the GNU General Public -dnl License when using or distributing such scripts, even though portions -dnl of the text of the Macro appear in them. The GNU General Public -dnl License (GPL) does govern all other use of the material that -dnl constitutes the Autoconf Macro. -dnl -dnl This special exception to the GPL applies to versions of the -dnl Autoconf Macro released by this project. When you make and -dnl distribute a modified version of the Autoconf Macro, you may extend -dnl this special exception to the GPL to apply to your modified version as -dnl well. - -AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [ - AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]), - [ac_save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $1" - AC_COMPILE_IFELSE([int a;], - [eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"], - [eval "AS_TR_SH([cc_cv_cflags_$1])='no'"]) - CFLAGS="$ac_save_CFLAGS" - ]) - - AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes], - [$2], [$3]) -]) - -AC_DEFUN([CC_CHECK_CFLAGS], [ - AC_CACHE_CHECK([if $CC supports $1 flag], - AS_TR_SH([cc_cv_cflags_$1]), - CC_CHECK_CFLAGS_SILENT([$1]) dnl Don't execute actions here! - ) - - AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes], - [$2], [$3]) -]) - -AC_DEFUN([CC_CHECK_LDFLAGS], [ - AC_CACHE_CHECK([if $CC supports $1 flag], - AS_TR_SH([cc_cv_ldflags_$1]), - [ac_save_LDFLAGS="$LDFLAGS" - LDFLAGS="$LDFLAGS $1" - AC_LINK_IFELSE([int main() { return 1; }], - [eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"], - [eval "AS_TR_SH([cc_cv_ldflags_$1])="]) - LDFLAGS="$ac_save_LDFLAGS" - ]) - - AS_IF([eval test x$]AS_TR_SH([cc_cv_ldflags_$1])[ = xyes], - [$2], [$3]) -]) - -dnl Check for a -Werror flag or equivalent. -Werror is the GCC -dnl and ICC flag that tells the compiler to treat all the warnings -dnl as fatal. We usually need this option to make sure that some -dnl constructs (like attributes) are not simply ignored. -dnl -dnl Other compilers don't support -Werror per se, but they support -dnl an equivalent flag: -dnl - Sun Studio compiler supports -errwarn=%all -AC_DEFUN([CC_CHECK_WERROR], [ - AC_CACHE_CHECK( - [for $CC way to treat warnings as errors], - [cc_cv_werror], - [CC_CHECK_CFLAGS_SILENT([-Werror], [cc_cv_werror=-Werror], - [CC_CHECK_CFLAGS_SILENT([-errwarn=%all], [cc_cv_werror=-errwarn=%all])]) - ]) -]) - -AC_DEFUN([CC_CHECK_ATTRIBUTE], [ - AC_REQUIRE([CC_CHECK_WERROR]) - AC_CACHE_CHECK([if $CC supports __attribute__(( ifelse([$2], , [$1], [$2]) ))], - AS_TR_SH([cc_cv_attribute_$1]), - [ac_save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $cc_cv_werror" - AC_COMPILE_IFELSE([$3], - [eval "AS_TR_SH([cc_cv_attribute_$1])='yes'"], - [eval "AS_TR_SH([cc_cv_attribute_$1])='no'"]) - CFLAGS="$ac_save_CFLAGS" - ]) - - AS_IF([eval test x$]AS_TR_SH([cc_cv_attribute_$1])[ = xyes], - [AC_DEFINE( - AS_TR_CPP([SUPPORT_ATTRIBUTE_$1]), 1, - [Define this if the compiler supports __attribute__(( ifelse([$2], , [$1], [$2]) ))] - ) - $4], - [$5]) -]) - -AC_DEFUN([CC_ATTRIBUTE_CONSTRUCTOR], [ - CC_CHECK_ATTRIBUTE( - [constructor],, - [void __attribute__((constructor)) ctor() { int a; }], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_FORMAT], [ - CC_CHECK_ATTRIBUTE( - [format], [format(printf, n, n)], - [void __attribute__((format(printf, 1, 2))) printflike(const char *fmt, ...) { fmt = (void *)0; }], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_FORMAT_ARG], [ - CC_CHECK_ATTRIBUTE( - [format_arg], [format_arg(printf)], - [char *__attribute__((format_arg(1))) gettextlike(const char *fmt) { fmt = (void *)0; }], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_VISIBILITY], [ - CC_CHECK_ATTRIBUTE( - [visibility_$1], [visibility("$1")], - [void __attribute__((visibility("$1"))) $1_function() { }], - [$2], [$3]) -]) - -AC_DEFUN([CC_ATTRIBUTE_NONNULL], [ - CC_CHECK_ATTRIBUTE( - [nonnull], [nonnull()], - [void __attribute__((nonnull())) some_function(void *foo, void *bar) { foo = (void*)0; bar = (void*)0; }], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_UNUSED], [ - CC_CHECK_ATTRIBUTE( - [unused], , - [void some_function(void *foo, __attribute__((unused)) void *bar);], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_SENTINEL], [ - CC_CHECK_ATTRIBUTE( - [sentinel], , - [void some_function(void *foo, ...) __attribute__((sentinel));], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_DEPRECATED], [ - CC_CHECK_ATTRIBUTE( - [deprecated], , - [void some_function(void *foo, ...) __attribute__((deprecated));], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_ALIAS], [ - CC_CHECK_ATTRIBUTE( - [alias], [weak, alias], - [void other_function(void *foo) { } - void some_function(void *foo) __attribute__((weak, alias("other_function")));], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_MALLOC], [ - CC_CHECK_ATTRIBUTE( - [malloc], , - [void * __attribute__((malloc)) my_alloc(int n);], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_PACKED], [ - CC_CHECK_ATTRIBUTE( - [packed], , - [struct astructure { char a; int b; long c; void *d; } __attribute__((packed));], - [$1], [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_CONST], [ - CC_CHECK_ATTRIBUTE( - [const], , - [int __attribute__((const)) twopow(int n) { return 1 << n; } ], - [$1], [$2]) -]) - -AC_DEFUN([CC_FLAG_VISIBILITY], [ - AC_REQUIRE([CC_CHECK_WERROR]) - AC_CACHE_CHECK([if $CC supports -fvisibility=hidden], - [cc_cv_flag_visibility], - [cc_flag_visibility_save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $cc_cv_werror" - CC_CHECK_CFLAGS_SILENT([-fvisibility=hidden], - cc_cv_flag_visibility='yes', - cc_cv_flag_visibility='no') - CFLAGS="$cc_flag_visibility_save_CFLAGS"]) - - AS_IF([test "x$cc_cv_flag_visibility" = "xyes"], - [AC_DEFINE([SUPPORT_FLAG_VISIBILITY], 1, - [Define this if the compiler supports the -fvisibility flag]) - $1], - [$2]) -]) - -AC_DEFUN([CC_FUNC_EXPECT], [ - AC_REQUIRE([CC_CHECK_WERROR]) - AC_CACHE_CHECK([if compiler has __builtin_expect function], - [cc_cv_func_expect], - [ac_save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $cc_cv_werror" - AC_COMPILE_IFELSE( - [int some_function() { - int a = 3; - return (int)__builtin_expect(a, 3); - }], - [cc_cv_func_expect=yes], - [cc_cv_func_expect=no]) - CFLAGS="$ac_save_CFLAGS" - ]) - - AS_IF([test "x$cc_cv_func_expect" = "xyes"], - [AC_DEFINE([SUPPORT__BUILTIN_EXPECT], 1, - [Define this if the compiler supports __builtin_expect() function]) - $1], - [$2]) -]) - -AC_DEFUN([CC_ATTRIBUTE_ALIGNED], [ - AC_REQUIRE([CC_CHECK_WERROR]) - AC_CACHE_CHECK([highest __attribute__ ((aligned ())) supported], - [cc_cv_attribute_aligned], - [ac_save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $cc_cv_werror" - for cc_attribute_align_try in 64 32 16 8 4 2; do - AC_COMPILE_IFELSE([ - int main() { - static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0; - return c; - }], [cc_cv_attribute_aligned=$cc_attribute_align_try; break]) - done - CFLAGS="$ac_save_CFLAGS" - ]) - - if test "x$cc_cv_attribute_aligned" != "x"; then - AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX], [$cc_cv_attribute_aligned], - [Define the highest alignment supported]) - fi -]) diff --git a/m4/zp_lynx_doc.m4 b/m4/zp_lynx_doc.m4 deleted file mode 100644 index 955a6ca0af..0000000000 --- a/m4/zp_lynx_doc.m4 +++ /dev/null @@ -1,24 +0,0 @@ -dnl Macro for enabling LYNX-based documentation generation - -AC_DEFUN([ZP_LYNX_DOC], [ - AC_ARG_ENABLE(lynx, - AS_HELP_STRING([--disable-lynx], - [Turn off lynx usage for documentation generation]),, - [enable_lynx=yes]) - - case "${enable_lynx}" in - yes) - AC_CHECK_PROG(have_lynx, lynx, yes, no) - - if test x$have_lynx = xno ; then - AC_MSG_WARN([*** lynx not found, plain text README will not be built ***]) - fi - ;; - no) - have_lynx=no ;; - *) - AC_MSG_ERROR(bad value ${enableval} for --disable-lynx) ;; - esac - - AM_CONDITIONAL([USE_LYNX], [test "x$have_lynx" = xyes]) -]) diff --git a/netlink.c b/netlink.c deleted file mode 100644 index 29f38e3a00..0000000000 --- a/netlink.c +++ /dev/null @@ -1,209 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of nss-myhostname. - - Copyright 2008-2011 Lennart Poettering - - nss-myhostname is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License - as published by the Free Software Foundation; either version 2.1 of - the License, or (at your option) any later version. - - nss-myhostname is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with nss-myhostname; If not, see - . -***/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ifconf.h" - -int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) { - - struct { - struct nlmsghdr hdr; - struct rtgenmsg gen; - } req; - struct rtgenmsg *gen; - int fd, r, on = 1; - uint32_t seq = 4711; - struct address *list = NULL; - unsigned n_list = 0; - - fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE); - if (fd < 0) - return -errno; - - if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) { - r = -errno; - goto finish; - } - - memset(&req, 0, sizeof(req)); - req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg)); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST|NLM_F_DUMP|NLM_F_ACK; - req.hdr.nlmsg_seq = seq; - req.hdr.nlmsg_pid = 0; - - gen = NLMSG_DATA(&req.hdr); - gen->rtgen_family = AF_UNSPEC; - - if (send(fd, &req, req.hdr.nlmsg_len, 0) < 0) { - r = -errno; - goto finish; - } - - for (;;) { - ssize_t bytes; - struct msghdr msg; - struct cmsghdr *cmsg; - struct ucred *ucred; - struct iovec iov; - struct nlmsghdr *p; - uint8_t cred_buffer[CMSG_SPACE(sizeof(struct ucred))]; - struct { - struct nlmsghdr hdr; - struct ifaddrmsg ifaddrmsg; - uint8_t payload[16*1024]; - } resp; - - memset(&iov, 0, sizeof(iov)); - iov.iov_base = &resp; - iov.iov_len = sizeof(resp); - - memset(&msg, 0, sizeof(msg)); - msg.msg_name = NULL; - msg.msg_namelen = 0; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cred_buffer; - msg.msg_controllen = sizeof(cred_buffer); - msg.msg_flags = 0; - - bytes = recvmsg(fd, &msg, 0); - if (bytes < 0) { - r = -errno; - goto finish; - } - - cmsg = CMSG_FIRSTHDR(&msg); - if (!cmsg || cmsg->cmsg_type != SCM_CREDENTIALS) { - r = -EIO; - goto finish; - } - - ucred = (struct ucred*) CMSG_DATA(cmsg); - if (ucred->uid != 0 || ucred->pid != 0) - continue; - - for (p = &resp.hdr; bytes > 0; p = NLMSG_NEXT(p, bytes)) { - struct ifaddrmsg *ifaddrmsg; - struct rtattr *a; - size_t l; - void *local = NULL, *address = NULL; - - if (!NLMSG_OK(p, (size_t) bytes)) { - r = -EIO; - goto finish; - } - - if (p->nlmsg_seq != seq) - continue; - - if (p->nlmsg_type == NLMSG_DONE) { - r = 0; - goto finish; - } - - if (p->nlmsg_type == NLMSG_ERROR) { - struct nlmsgerr *nlmsgerr; - - nlmsgerr = NLMSG_DATA(p); - r = -nlmsgerr->error; - goto finish; - } - - if (p->nlmsg_type != RTM_NEWADDR) - continue; - - ifaddrmsg = NLMSG_DATA(p); - - if (ifaddrmsg->ifa_family != AF_INET && - ifaddrmsg->ifa_family != AF_INET6) - continue; - - if (ifaddrmsg->ifa_scope == RT_SCOPE_HOST || - ifaddrmsg->ifa_scope == RT_SCOPE_NOWHERE) - continue; - - if (ifaddrmsg->ifa_flags & IFA_F_DEPRECATED) - continue; - - l = NLMSG_PAYLOAD(p, sizeof(struct ifaddrmsg)); - a = IFA_RTA(ifaddrmsg); - - while (RTA_OK(a, l)) { - - if (a->rta_type == IFA_ADDRESS) - address = RTA_DATA(a); - else if (a->rta_type == IFA_LOCAL) - local = RTA_DATA(a); - - a = RTA_NEXT(a, l); - } - - if (local) - address = local; - - if (!address) - continue; - - list = realloc(list, (n_list+1) * sizeof(struct address)); - if (!list) { - r = -ENOMEM; - goto finish; - } - - list[n_list].family = ifaddrmsg->ifa_family; - list[n_list].scope = ifaddrmsg->ifa_scope; - memcpy(list[n_list].address, address, ifaddrmsg->ifa_family == AF_INET ? 4 : 16); - list[n_list].ifindex = ifaddrmsg->ifa_index; - - n_list++; - } - } - -finish: - close(fd); - - if (r < 0) - free(list); - else { - qsort(list, n_list, sizeof(struct address), address_compare); - - *_list = list; - *_n_list = n_list; - } - - return r; -} diff --git a/nss-myhostname.c b/nss-myhostname.c deleted file mode 100644 index 83180ad805..0000000000 --- a/nss-myhostname.c +++ /dev/null @@ -1,451 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of nss-myhostname. - - Copyright 2008-2011 Lennart Poettering - - nss-myhostname is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License - as published by the Free Software Foundation; either version 2.1 of - the License, or (at your option) any later version. - - nss-myhostname is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with nss-myhostname; If not, see - . -***/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "ifconf.h" - -/* We use 127.0.0.2 as IPv4 address. This has the advantage over - * 127.0.0.1 that it can be translated back to the local hostname. For - * IPv6 we use ::1 which unfortunately will not translate back to the - * hostname but instead something like "localhost6" or so. */ - -#define LOCALADDRESS_IPV4 (htonl(0x7F000002)) -#define LOCALADDRESS_IPV6 &in6addr_loopback -#define LOOPBACK_INTERFACE "lo" - -#define ALIGN(a) (((a+sizeof(void*)-1)/sizeof(void*))*sizeof(void*)) - -enum nss_status _nss_myhostname_gethostbyname4_r( - const char *name, - struct gaih_addrtuple **pat, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp) _public_; - -enum nss_status _nss_myhostname_gethostbyname3_r( - const char *name, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp, - char **canonp) _public_; - -enum nss_status _nss_myhostname_gethostbyname2_r( - const char *name, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop) _public_; - -enum nss_status _nss_myhostname_gethostbyname_r( - const char *name, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop) _public_; - -enum nss_status _nss_myhostname_gethostbyaddr2_r( - const void* addr, socklen_t len, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp) _public_; - -enum nss_status _nss_myhostname_gethostbyaddr_r( - const void* addr, socklen_t len, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop) _public_; - -enum nss_status _nss_myhostname_gethostbyname4_r( - const char *name, - struct gaih_addrtuple **pat, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp) { - - unsigned lo_ifi; - char hn[HOST_NAME_MAX+1]; - size_t l, idx, ms; - char *r_name; - struct gaih_addrtuple *r_tuple, *r_tuple_prev = NULL; - struct address *addresses = NULL, *a; - unsigned n_addresses = 0, n; - - memset(hn, 0, sizeof(hn)); - if (gethostname(hn, sizeof(hn)-1) < 0) { - *errnop = errno; - *h_errnop = NO_RECOVERY; - return NSS_STATUS_UNAVAIL; - } - - if (strcasecmp(name, hn) != 0) { - *errnop = ENOENT; - *h_errnop = HOST_NOT_FOUND; - return NSS_STATUS_NOTFOUND; - } - - /* If this fails, n_addresses is 0. Which is fine */ - ifconf_acquire_addresses(&addresses, &n_addresses); - - /* If this call fails we fill in 0 as scope. Which is fine */ - lo_ifi = if_nametoindex(LOOPBACK_INTERFACE); - - l = strlen(hn); - ms = ALIGN(l+1)+ALIGN(sizeof(struct gaih_addrtuple))*(n_addresses > 0 ? n_addresses : 2); - if (buflen < ms) { - *errnop = ENOMEM; - *h_errnop = NO_RECOVERY; - free(addresses); - return NSS_STATUS_TRYAGAIN; - } - - /* First, fill in hostname */ - r_name = buffer; - memcpy(r_name, hn, l+1); - idx = ALIGN(l+1); - - if (n_addresses <= 0) { - /* Second, fill in IPv6 tuple */ - r_tuple = (struct gaih_addrtuple*) (buffer + idx); - r_tuple->next = r_tuple_prev; - r_tuple->name = r_name; - r_tuple->family = AF_INET6; - memcpy(r_tuple->addr, LOCALADDRESS_IPV6, 16); - r_tuple->scopeid = (uint32_t) lo_ifi; - - idx += ALIGN(sizeof(struct gaih_addrtuple)); - r_tuple_prev = r_tuple; - - /* Third, fill in IPv4 tuple */ - r_tuple = (struct gaih_addrtuple*) (buffer + idx); - r_tuple->next = r_tuple_prev; - r_tuple->name = r_name; - r_tuple->family = AF_INET; - *(uint32_t*) r_tuple->addr = LOCALADDRESS_IPV4; - r_tuple->scopeid = (uint32_t) lo_ifi; - - idx += ALIGN(sizeof(struct gaih_addrtuple)); - r_tuple_prev = r_tuple; - } - - /* Fourth, fill actual addresses in, but in backwards order */ - for (a = addresses + n_addresses - 1, n = 0; n < n_addresses; n++, a--) { - r_tuple = (struct gaih_addrtuple*) (buffer + idx); - r_tuple->next = r_tuple_prev; - r_tuple->name = r_name; - r_tuple->family = a->family; - r_tuple->scopeid = a->ifindex; - memcpy(r_tuple->addr, a->address, 16); - - idx += ALIGN(sizeof(struct gaih_addrtuple)); - r_tuple_prev = r_tuple; - } - - /* Verify the size matches */ - assert(idx == ms); - - *pat = r_tuple_prev; - - if (ttlp) - *ttlp = 0; - - free(addresses); - - return NSS_STATUS_SUCCESS; -} - -static enum nss_status fill_in_hostent( - const char *hn, - int af, - struct hostent *result, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp, - char **canonp) { - - size_t l, idx, ms; - char *r_addr, *r_name, *r_aliases, *r_addr_list; - size_t alen; - struct address *addresses = NULL, *a; - unsigned n_addresses = 0, n, c; - - alen = PROTO_ADDRESS_SIZE(af); - - ifconf_acquire_addresses(&addresses, &n_addresses); - - for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++) - if (af == a->family) - c++; - - l = strlen(hn); - ms = ALIGN(l+1)+ - sizeof(char*)+ - (c > 0 ? c : 1)*ALIGN(alen)+ - (c > 0 ? c+1 : 2)*sizeof(char*); - - if (buflen < ms) { - *errnop = ENOMEM; - *h_errnop = NO_RECOVERY; - free(addresses); - return NSS_STATUS_TRYAGAIN; - } - - /* First, fill in hostname */ - r_name = buffer; - memcpy(r_name, hn, l+1); - idx = ALIGN(l+1); - - /* Second, create (empty) aliases array */ - r_aliases = buffer + idx; - *(char**) r_aliases = NULL; - idx += sizeof(char*); - - /* Third, add addresses */ - r_addr = buffer + idx; - if (c > 0) { - unsigned i = 0; - - for (a = addresses, n = 0; n < n_addresses; a++, n++) { - if (af != a->family) - continue; - - memcpy(r_addr + i*ALIGN(alen), a->address, alen); - i++; - } - - assert(i == c); - idx += c*ALIGN(alen); - } else { - if (af == AF_INET) - *(uint32_t*) r_addr = LOCALADDRESS_IPV4; - else - memcpy(r_addr, LOCALADDRESS_IPV6, 16); - - idx += ALIGN(alen); - } - - /* Fourth, add address pointer array */ - r_addr_list = buffer + idx; - if (c > 0) { - unsigned i = 0; - - for (a = addresses, n = 0; n < n_addresses; a++, n++) { - if (af != a->family) - continue; - - ((char**) r_addr_list)[i] = (r_addr + i*ALIGN(alen)); - i++; - } - - assert(i == c); - ((char**) r_addr_list)[c] = NULL; - idx += (c+1)*sizeof(char*); - - } else { - ((char**) r_addr_list)[0] = r_addr; - ((char**) r_addr_list)[1] = NULL; - idx += 2*sizeof(char*); - } - - /* Verify the size matches */ - assert(idx == ms); - - result->h_name = r_name; - result->h_aliases = (char**) r_aliases; - result->h_addrtype = af; - result->h_length = alen; - result->h_addr_list = (char**) r_addr_list; - - if (ttlp) - *ttlp = 0; - - if (canonp) - *canonp = r_name; - - free(addresses); - - return NSS_STATUS_SUCCESS; -} - -enum nss_status _nss_myhostname_gethostbyname3_r( - const char *name, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp, - char **canonp) { - - char hn[HOST_NAME_MAX+1]; - - if (af == AF_UNSPEC) - af = AF_INET; - - if (af != AF_INET && af != AF_INET6) { - *errnop = EAFNOSUPPORT; - *h_errnop = NO_DATA; - return NSS_STATUS_UNAVAIL; - } - - memset(hn, 0, sizeof(hn)); - if (gethostname(hn, sizeof(hn)-1) < 0) { - *errnop = errno; - *h_errnop = NO_RECOVERY; - return NSS_STATUS_UNAVAIL; - } - - if (strcasecmp(name, hn) != 0) { - *errnop = ENOENT; - *h_errnop = HOST_NOT_FOUND; - return NSS_STATUS_NOTFOUND; - } - - return fill_in_hostent(hn, af, host, buffer, buflen, errnop, h_errnop, ttlp, canonp); -} - -enum nss_status _nss_myhostname_gethostbyname2_r( - const char *name, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop) { - - return _nss_myhostname_gethostbyname3_r( - name, - af, - host, - buffer, buflen, - errnop, h_errnop, - NULL, - NULL); -} - -enum nss_status _nss_myhostname_gethostbyname_r( - const char *name, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop) { - - return _nss_myhostname_gethostbyname3_r( - name, - AF_UNSPEC, - host, - buffer, buflen, - errnop, h_errnop, - NULL, - NULL); -} - -enum nss_status _nss_myhostname_gethostbyaddr2_r( - const void* addr, socklen_t len, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop, - int32_t *ttlp) { - - char hn[HOST_NAME_MAX+1]; - struct address *addresses = NULL, *a; - unsigned n_addresses = 0, n; - - if (len != PROTO_ADDRESS_SIZE(af)) { - *errnop = EINVAL; - *h_errnop = NO_RECOVERY; - return NSS_STATUS_UNAVAIL; - } - - if (af == AF_INET) { - - if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4) - goto found; - - } else if (af == AF_INET6) { - - if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0) - goto found; - - } else { - *errnop = EAFNOSUPPORT; - *h_errnop = NO_DATA; - return NSS_STATUS_UNAVAIL; - } - - ifconf_acquire_addresses(&addresses, &n_addresses); - - for (a = addresses, n = 0; n < n_addresses; n++, a++) { - if (af != a->family) - continue; - - if (memcmp(addr, a->address, PROTO_ADDRESS_SIZE(af)) == 0) - goto found; - } - - *errnop = ENOENT; - *h_errnop = HOST_NOT_FOUND; - - free(addresses); - return NSS_STATUS_NOTFOUND; - -found: - free(addresses); - - memset(hn, 0, sizeof(hn)); - if (gethostname(hn, sizeof(hn)-1) < 0) { - *errnop = errno; - *h_errnop = NO_RECOVERY; - - return NSS_STATUS_UNAVAIL; - } - - return fill_in_hostent(hn, af, host, buffer, buflen, errnop, h_errnop, ttlp, NULL); - -} - -enum nss_status _nss_myhostname_gethostbyaddr_r( - const void* addr, socklen_t len, - int af, - struct hostent *host, - char *buffer, size_t buflen, - int *errnop, int *h_errnop) { - - return _nss_myhostname_gethostbyaddr2_r( - addr, len, - af, - host, - buffer, buflen, - errnop, h_errnop, - NULL); -} diff --git a/src/nss-myhostname/.gitignore b/src/nss-myhostname/.gitignore new file mode 100644 index 0000000000..b35d629834 --- /dev/null +++ b/src/nss-myhostname/.gitignore @@ -0,0 +1,24 @@ +README +.deps +.libs +*.cache +configure +Makefile +stamp-* +*.la +*.lo +*.log +*.so.2 +Makefile.in +aclocal.m4 +config.guess +config.h +config.h.in +config.rpath +config.status +config.sub +depcomp +install-sh +libtool +ltmain.sh +missing diff --git a/src/nss-myhostname/LICENSE b/src/nss-myhostname/LICENSE new file mode 100644 index 0000000000..2d2d780e60 --- /dev/null +++ b/src/nss-myhostname/LICENSE @@ -0,0 +1,510 @@ + + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations +below. + + When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + + To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + + For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + + We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + + To protect each distributor, we want to make it very clear that +there is no warranty for the free library. Also, if the library is +modified by someone else and passed on, the recipients should know +that what they have is not the original version, so that the original +author's reputation will not be affected by problems that might be +introduced by others. + + Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + + Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + + When a program is linked with a library, whether statically or using +a shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + + We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + + For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it +becomes a de-facto standard. To achieve this, non-free programs must +be allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + + In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + + Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + + The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + + GNU LESSER GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or other +program which contains a notice placed by the copyright holder or +other authorized party saying it may be distributed under the terms of +this Lesser General Public License (also called "this License"). +Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or data +prepared so as to be conveniently linked with application programs +(which use some of those functions and data) to form executables. + + The "Library", below, refers to any such software library or work +which has been distributed under these terms. A "work based on the +Library" means either the Library or any derivative work under +copyright law: that is to say, a work containing the Library or a +portion of it, either verbatim or with modifications and/or translated +straightforwardly into another language. (Hereinafter, translation is +included without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work for +making modifications to it. For a library, complete source code means +all the source code for all modules it contains, plus any associated +interface definition files, plus the scripts used to control +compilation and installation of the library. + + Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running a program using the Library is not restricted, and output from +such a program is covered only if its contents constitute a work based +on the Library (independent of the use of the Library in a tool for +writing it). Whether that is true depends on what the Library does +and what the program that uses the Library does. + + 1. You may copy and distribute verbatim copies of the Library's +complete source code as you receive it, in any medium, provided that +you conspicuously and appropriately publish on each copy an +appropriate copyright notice and disclaimer of warranty; keep intact +all the notices that refer to this License and to the absence of any +warranty; and distribute a copy of this License along with the +Library. + + You may charge a fee for the physical act of transferring a copy, +and you may at your option offer warranty protection in exchange for a +fee. + + 2. You may modify your copy or copies of the Library or any portion +of it, thus forming a work based on the Library, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) The modified work must itself be a software library. + + b) You must cause the files modified to carry prominent notices + stating that you changed the files and the date of any change. + + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this License. + + d) If a facility in the modified Library refers to a function or a + table of data to be supplied by an application program that uses + the facility, other than as an argument passed when the facility + is invoked, then you must make a good faith effort to ensure that, + in the event an application does not supply such function or + table, the facility still operates, and performs whatever part of + its purpose remains meaningful. + + (For example, a function in a library to compute square roots has + a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function must + be optional: if the application does not supply it, the square + root function must still compute square roots.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Library, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Library, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Library. + +In addition, mere aggregation of another work not based on the Library +with the Library (or with a work based on the Library) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General Public +License instead of this License to a given copy of the Library. To do +this, you must alter all the notices that refer to this License, so +that they refer to the ordinary GNU General Public License, version 2, +instead of to this License. (If a newer version than version 2 of the +ordinary GNU General Public License has appeared, then you can specify +that version instead if you wish.) Do not make any other change in +these notices. + + Once this change is made in a given copy, it is irreversible for +that copy, so the ordinary GNU General Public License applies to all +subsequent copies and derivative works made from that copy. + + This option is useful when you wish to copy part of the code of +the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or +derivative of it, under Section 2) in object code or executable form +under the terms of Sections 1 and 2 above provided that you accompany +it with the complete corresponding machine-readable source code, which +must be distributed under the terms of Sections 1 and 2 above on a +medium customarily used for software interchange. + + If distribution of object code is made by offering access to copy +from a designated place, then offering equivalent access to copy the +source code from the same place satisfies the requirement to +distribute the source code, even though third parties are not +compelled to copy the source along with the object code. + + 5. A program that contains no derivative of any portion of the +Library, but is designed to work with the Library by being compiled or +linked with it, is called a "work that uses the Library". Such a +work, in isolation, is not a derivative work of the Library, and +therefore falls outside the scope of this License. + + However, linking a "work that uses the Library" with the Library +creates an executable that is a derivative of the Library (because it +contains portions of the Library), rather than a "work that uses the +library". The executable is therefore covered by this License. +Section 6 states terms for distribution of such executables. + + When a "work that uses the Library" uses material from a header file +that is part of the Library, the object code for the work may be a +derivative work of the Library even though the source code is not. +Whether this is true is especially significant if the work can be +linked without the Library, or if the work is itself a library. The +threshold for this to be true is not precisely defined by law. + + If such an object file uses only numerical parameters, data +structure layouts and accessors, and small macros and small inline +functions (ten lines or less in length), then the use of the object +file is unrestricted, regardless of whether it is legally a derivative +work. (Executables containing this object code plus portions of the +Library will still fall under Section 6.) + + Otherwise, if the work is a derivative of the Library, you may +distribute the object code for the work under the terms of Section 6. +Any executables containing that work also fall under Section 6, +whether or not they are linked directly with the Library itself. + + 6. As an exception to the Sections above, you may also combine or +link a "work that uses the Library" with the Library to produce a +work containing portions of the Library, and distribute that work +under terms of your choice, provided that the terms permit +modification of the work for the customer's own use and reverse +engineering for debugging such modifications. + + You must give prominent notice with each copy of the work that the +Library is used in it and that the Library and its use are covered by +this License. You must supply a copy of this License. If the work +during execution displays copyright notices, you must include the +copyright notice for the Library among them, as well as a reference +directing the user to the copy of this License. Also, you must do one +of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including whatever + changes were used in the work (which must be distributed under + Sections 1 and 2 above); and, if the work is an executable linked + with the Library, with the complete machine-readable "work that + uses the Library", as object code and/or source code, so that the + user can modify the Library and then relink to produce a modified + executable containing the modified Library. (It is understood + that the user who changes the contents of definitions files in the + Library will not necessarily be able to recompile the application + to use the modified definitions.) + + b) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (1) uses at run time a + copy of the library already present on the user's computer system, + rather than copying library functions into the executable, and (2) + will operate properly with a modified version of the library, if + the user installs one, as long as the modified version is + interface-compatible with the version that the work was made with. + + c) Accompany the work with a written offer, valid for at least + three years, to give the same user the materials specified in + Subsection 6a, above, for a charge no more than the cost of + performing this distribution. + + d) If distribution of the work is made by offering access to copy + from a designated place, offer equivalent access to copy the above + specified materials from the same place. + + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses the +Library" must include any data and utility programs needed for +reproducing the executable from it. However, as a special exception, +the materials to be distributed need not include anything that is +normally distributed (in either source or binary form) with the major +components (compiler, kernel, and so on) of the operating system on +which the executable runs, unless that component itself accompanies +the executable. + + It may happen that this requirement contradicts the license +restrictions of other proprietary libraries that do not normally +accompany the operating system. Such a contradiction means you cannot +use both them and the Library together in an executable that you +distribute. + + 7. You may place library facilities that are a work based on the +Library side-by-side in a single library together with other library +facilities not covered by this License, and distribute such a combined +library, provided that the separate distribution of the work based on +the Library and of the other library facilities is otherwise +permitted, and provided that you do these two things: + + a) Accompany the combined library with a copy of the same work + based on the Library, uncombined with any other library + facilities. This must be distributed under the terms of the + Sections above. + + b) Give prominent notice with the combined library of the fact + that part of it is a work based on the Library, and explaining + where to find the accompanying uncombined form of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute +the Library except as expressly provided under this License. Any +attempt otherwise to copy, modify, sublicense, link with, or +distribute the Library is void, and will automatically terminate your +rights under this License. However, parties who have received copies, +or rights, from you under this License will not have their licenses +terminated so long as such parties remain in full compliance. + + 9. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Library or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Library (or any work based on the +Library), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Library or works based on it. + + 10. Each time you redistribute the Library (or any work based on the +Library), the recipient automatically receives a license from the +original licensor to copy, distribute, link with or modify the Library +subject to these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties with +this License. + + 11. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Library at all. For example, if a patent +license would not permit royalty-free redistribution of the Library by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Library. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply, and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Library under this License +may add an explicit geographical distribution limitation excluding those +countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new +versions of the Lesser General Public License from time to time. +Such new versions will be similar in spirit to the present version, +but may differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Library +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Library does not specify a +license version number, you may choose any version ever published by +the Free Software Foundation. + + 14. If you wish to incorporate parts of the Library into other free +programs whose distribution conditions are incompatible with these, +write to the author to ask for permission. For software which is +copyrighted by the Free Software Foundation, write to the Free +Software Foundation; we sometimes make exceptions for this. Our +decision will be guided by the two goals of preserving the free status +of all derivatives of our free software and of promoting the sharing +and reuse of software generally. + + NO WARRANTY + + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms +of the ordinary General Public License). + + To apply these terms, attach the following notices to the library. +It is safest to attach them to the start of each source file to most +effectively convey the exclusion of warranty; and each file should +have at least the "copyright" line and a pointer to where the full +notice is found. + + + + Copyright (C) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or +your school, if any, to sign a "copyright disclaimer" for the library, +if necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James + Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/src/nss-myhostname/Makefile.am b/src/nss-myhostname/Makefile.am new file mode 100644 index 0000000000..f82b8d46e2 --- /dev/null +++ b/src/nss-myhostname/Makefile.am @@ -0,0 +1,66 @@ +# This file is part of nss-myhostname. +# +# Copyright 2008 Lennart Poettering +# +# nss-myhostname is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public License +# as published by the Free Software Foundation, either version 2.1 of +# the License, or (at your option) any later version. +# +# nss-myhostname is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with nss-myhostname. If not, If not, see +# . + +ACLOCAL_AMFLAGS = -I m4 + +lib_LTLIBRARIES = libnss_myhostname.la + +EXTRA_DIST=bootstrap.sh README LICENSE +SUBDIRS=doc + +AM_CPPFLAGS = -include $(top_builddir)/config.h + +MAINTAINERCLEANFILES=README +noinst_DATA = README + +README: + rm -f README + $(MAKE) -C doc README + cd $(srcdir) && ln -s doc/README README + +homepage: all dist + test -d $$HOME/homepage/private + mkdir -p $$HOME/homepage/private/projects/nss-myhostname + cp nss-myhostname-@PACKAGE_VERSION@.tar.gz doc/README.html doc/style.css $$HOME/homepage/private/projects/nss-myhostname + ln -sf README.html $$HOME/homepage/private/projects/nss-myhostname/index.html + +.PHONY: homepage + +libnss_myhostname_la_SOURCES = \ + nss-myhostname.c \ + ifconf.h + +if LEGACY +libnss_myhostname_la_SOURCES += legacy.c +else +libnss_myhostname_la_SOURCES += netlink.c +endif + +libnss_myhostname_la_LDFLAGS = \ + -avoid-version \ + -module \ + -export-dynamic \ + -shrext .so.2 + +install-exec-hook: + rm -f $(DESTDIR)$(libdir)/libnss_myhostname.la + rm -f $(DESTDIR)$(libdir)/libnss_myhostname_minimal.la + +uninstall-hook: + rm -f $(DESTDIR)$(libdir)/libnss_myhostname.so.2 + rm -f $(DESTDIR)$(libdir)/libnss_myhostname_minimal.so.2 diff --git a/src/nss-myhostname/bootstrap.sh b/src/nss-myhostname/bootstrap.sh new file mode 100755 index 0000000000..d224f31fb5 --- /dev/null +++ b/src/nss-myhostname/bootstrap.sh @@ -0,0 +1,66 @@ +#!/bin/bash + +# This file is part of nss-myhostname. +# +# Copyright 2008 Lennart Poettering +# +# nss-myhostname is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public License +# as published by the Free Software Foundation, either version 2.1 of +# the License, or (at your option) any later version. +# +# nss-myhostname is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with nss-myhostname. If not, If not, see +# . + +VERSION=1.9 + +run_versioned() { + local P + local V + + V=$(echo "$2" | sed -e 's,\.,,g') + + if [ -e "`which $1$V 2> /dev/null`" ] ; then + P="$1$V" + else + if [ -e "`which $1-$2 2> /dev/null`" ] ; then + P="$1-$2" + else + P="$1" + fi + fi + + shift 2 + "$P" "$@" +} + +set -ex + +if [ "x$1" = "xam" ] ; then + run_versioned automake "$VERSION" -a -c --foreign + ./config.status +else + rm -rf autom4te.cache + rm -f config.cache + + touch config.rpath + test "x$LIBTOOLIZE" = "x" && LIBTOOLIZE=libtoolize + + mkdir -p m4 + "$LIBTOOLIZE" -c --force + run_versioned aclocal "$VERSION" -I m4 + run_versioned autoconf 2.59 -Wall + run_versioned autoheader 2.59 + run_versioned automake "$VERSION" --copy --foreign --add-missing + + if test "x$NOCONFIGURE" = "x"; then + CFLAGS="-g -O0" ./configure --sysconfdir=/etc --localstatedir=/var "$@" + make clean + fi +fi diff --git a/src/nss-myhostname/configure.ac b/src/nss-myhostname/configure.ac new file mode 100644 index 0000000000..30ebc44a80 --- /dev/null +++ b/src/nss-myhostname/configure.ac @@ -0,0 +1,84 @@ +# -*- Autoconf -*- +# Process this file with autoconf to produce a configure script. + +# This file is part of nss-myhostname. +# +# Copyright 2008 Lennart Poettering +# +# nss-myhostname is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public License +# as published by the Free Software Foundation, either version 2.1 of +# the License, or (at your option) any later version. +# +# nss-myhostname is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with nss-myhostname. If not, If not, see +# . + +AC_PREREQ(2.62) +AC_INIT([nss-myhostname],[0.3],[mzzlubfganzr (at) 0pointer (dot) de]) +AC_CONFIG_SRCDIR([nss-myhostname.c]) +AC_CONFIG_HEADERS([config.h]) +AC_CONFIG_MACRO_DIR(m4) +AC_USE_SYSTEM_EXTENSIONS +AC_SYS_LARGEFILE + +AM_INIT_AUTOMAKE([foreign 1.9 -Wall -Wno-portability silent-rules tar-pax subdir-objects dist-bzip2]) + +AC_SUBST(PACKAGE_URL, [http://0pointer.de/lennart/projects/nss-myhostname/]) + +ac_default_prefix="/" + +AC_CANONICAL_HOST +case "$host_os" in + linux*) legacy=false ;; + *) legacy=true ;; +esac +AM_CONDITIONAL([LEGACY], [test x$legacy = xtrue]) + +# Checks for programs. +AC_PROG_CC +AC_PROG_CC_C99 +AC_PROG_CPP + +AC_PROG_INSTALL +AC_PROG_LN_S +AC_PROG_MAKE_SET + +# GCC flags + +DESIRED_FLAGS="-Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter -ffast-math -fvisibility=hidden -fdiagnostics-show-option" + +for flag in $DESIRED_FLAGS ; do + CC_CHECK_CFLAGS([$flag], [CFLAGS="$CFLAGS $flag"]) +done + +# libtool stuff +AC_DISABLE_STATIC +LT_PREREQ(2.2) +LT_INIT + +# Checks for header files. +AC_HEADER_STDC +AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h unistd.h nss.h sys/ioctl.h]) + +# Checks for typedefs, structures, and compiler characteristics. +AC_C_CONST +AC_TYPE_SIZE_T +AC_HEADER_TIME + +# Checks for library functions. +AC_FUNC_MALLOC +AC_FUNC_SELECT_ARGTYPES +AC_CHECK_FUNCS([gethostbyaddr gethostbyname gettimeofday inet_ntoa memset select socket strcspn strdup strerror strncasecmp strcasecmp strspn]) + +# LYNX documentation generation +ZP_LYNX_DOC + +AC_CONFIG_FILES([Makefile doc/Makefile doc/README.html ]) + +AC_OUTPUT diff --git a/src/nss-myhostname/doc/.gitignore b/src/nss-myhostname/doc/.gitignore new file mode 100644 index 0000000000..bc63974b07 --- /dev/null +++ b/src/nss-myhostname/doc/.gitignore @@ -0,0 +1,2 @@ +README +README.html diff --git a/src/nss-myhostname/doc/Makefile.am b/src/nss-myhostname/doc/Makefile.am new file mode 100644 index 0000000000..4f773ac2c6 --- /dev/null +++ b/src/nss-myhostname/doc/Makefile.am @@ -0,0 +1,38 @@ +# This file is part of nss-myhostname. +# +# Copyright 2008 Lennart Poettering +# +# nss-myhostname is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public License +# as published by the Free Software Foundation, either version 2.1 of +# the License, or (at your option) any later version. +# +# nss-myhostname is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with nss-myhostname. If not, If not, see +# . + +dist_html_DATA = README.html style.css +EXTRA_DIST = README.html.in + +MAINTAINERCLEANFILES = README.html +CLEANFILES = + +if USE_LYNX +dist_doc_DATA = README +MAINTAINERCLEANFILES += README + +README: README.html + lynx --dump $^ | sed 's,file://localhost/.*/doc/README.html,README,' > $@ + +CLEANFILES += README +endif + +tidy: README.html + tidy -qe < README.html ; true + +.PHONY: tidy diff --git a/src/nss-myhostname/doc/README.html.in b/src/nss-myhostname/doc/README.html.in new file mode 100644 index 0000000000..f78618298c --- /dev/null +++ b/src/nss-myhostname/doc/README.html.in @@ -0,0 +1,166 @@ + + + + + +nss-myhostname @PACKAGE_VERSION@ + + + + +

nss-myhostname @PACKAGE_VERSION@

+ +

Copyright 2005-2011 Lennart Poettering <@PACKAGE_BUGREPORT@>

+ + + +

License

+ +

This program is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public License as +published by the Free Software Foundation, either version 2.1 of the +License, or (at your option) any later version.

+ +

This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Lesser General Public License for more details.

+ +

News

+ +
Mon May 9 2011:
+ +

Version +0.3 released. Changes include: Always return locally configured IP +addresses first, use 127.0.0.2/::1 only as fallback if no addresses +are configured.

+ +
Mon Oct 27 2008:
+ +

Version 0.2 +released. Changes include: Update for IPv6 and newest glibc NSS interfaces

+ +
Sat Nov 19 2005:
+ +

Version 0.1 +released. Initial release.

+ +

Overview

+ +

nss-myhostname is a plugin for the GNU Name Service Switch +(NSS) functionality of the GNU C Library (glibc) providing +host name resolution for the locally configured system hostname as +returned by gethostname(2). Various software relies on an +always resolvable local host name. When using dynamic hostnames this +is usually achieved by patching /etc/hosts at the same time +as changing the host name. This however is not ideal since it requires +a writable /etc file system and is fragile because the file +might be edited by the administrator at the same +time. nss-myhostname simply returns all locally configure +public IP addresses, or -- if none are configured -- the IPv4 +address 127.0.0.2 (wich is on the local loopback) and the +IPv6 address ::1 (which is the local host) for whatever +system hostname is configured locally. Patching /etc/hosts +is thus no longer necessary.

+ +

Current Status

+ +

It works!

+ +

Documentation

+ +

After compiling and installing nss-myhostname you'll find a +new NSS modules in /lib:

+
    +
  • libnss_myhostname.so.2
    • +
+ +

To activate the NSS modules you have to edit +/etc/nsswitch.conf and add myhostname to the +line starting with "hosts:". On Debian this looks like +this:

+ +
# /etc/nsswitch.conf
+
+passwd:         compat
+group:          compat
+shadow:         compat
+
+hosts:          files dns myhostname
+networks:       files
+
+protocols:      db files
+services:       db files
+ethers:         db files
+rpc:            db files
+
+netgroup:       nis
+ +

That's it. You should now always be able to resolve your local +system hostname. For a quick check +use glibc's getent tool: + +

$ getent ahosts `hostname`
+::1             STREAM omega
+::1             DGRAM
+::1             RAW
+127.0.0.2       STREAM
+127.0.0.2       DGRAM
+127.0.0.2       RAW
+
+ +

In this case the local host name is omega.

+ +

It is recommended to put myhostname last in +the nsswitch.conf line to make sure that this mapping is only +used as fallback, and any DNS or /etc/hosts based mapping takes +precedence.

+ +

Requirements

+ +

nss-myhostname uses NSS interfaces that are specific to modern glibc's.

+ +

nss-myhostname was developed and tested on Fedora 15 from +May 2011, it should work on most other Linux distributions since it +uses GNU autoconf and GNU libtool for source code configuration and +shared library management.

+ +

Installation

+ +

As this package is made with the GNU autotools you should run +./configure inside the distribution directory for configuring +the source tree. After that you should run make for +compilation and make install (as root) for installation of +nss-myhostname.

+ +

Acknowledgements

+ +

None so far.

+ +

Download

+ +

The newest release is always available from @PACKAGE_URL@

+ +

The current release is @PACKAGE_VERSION@

+ +

Get nss-myhostname's development sources from the GIT repository (gitweb):

+ +
git clone git://git.0pointer.de/nss-myhostname
+ +
+
Lennart Poettering <@PACKAGE_BUGREPORT@>, May 2011
+ + + diff --git a/src/nss-myhostname/doc/style.css b/src/nss-myhostname/doc/style.css new file mode 100644 index 0000000000..5cc21fd510 --- /dev/null +++ b/src/nss-myhostname/doc/style.css @@ -0,0 +1,25 @@ +/*** + This file is part of nss-myhostname. + + Copyright 2008 Lennart Poettering + + nss-myhostname is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License + as published by the Free Software Foundation, either version 2.1 + of the License, or (at your option) any later version. + + nss-myhostname is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with nss-myhostname. If not, If not, see + . +***/ + +body { color: black; background-color: white; } +a:link, a:visited { color: #900000; } +div.news-date { font-size: 80%; font-style: italic; } +pre { background-color: #f0f0f0; padding: 0.4cm; } +.grey { color: #8f8f8f; font-size: 80%; } diff --git a/src/nss-myhostname/ifconf.h b/src/nss-myhostname/ifconf.h new file mode 100644 index 0000000000..6b2c83f91e --- /dev/null +++ b/src/nss-myhostname/ifconf.h @@ -0,0 +1,74 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#ifndef fooifconfhfoo +#define fooifconfhfoo + +#include + +/*** + This file is part of nss-myhostname. + + Copyright 2008-2011 Lennart Poettering + + nss-myhostname is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License + as published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + nss-myhostname is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with nss-myhostname; If not, see + . +***/ + +#include +#include +#include + +struct address { + unsigned char family; + uint8_t address[16]; + unsigned char scope; + int ifindex; +}; + +#define _public_ __attribute__ ((visibility("default"))) +#define _hidden_ __attribute__ ((visibility("hidden"))) + +int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_; + +static inline size_t PROTO_ADDRESS_SIZE(int proto) { + assert(proto == AF_INET || proto == AF_INET6); + + return proto == AF_INET6 ? 16 : 4; +} + +static inline int address_compare(const void *_a, const void *_b) { + const struct address *a = _a, *b = _b; + + /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */ + + if (a->scope < b->scope) + return -1; + if (a->scope > b->scope) + return 1; + + if (a->family == AF_INET && b->family == AF_INET6) + return -1; + if (a->family == AF_INET6 && b->family == AF_INET) + return 1; + + if (a->ifindex < b->ifindex) + return -1; + if (a->ifindex > b->ifindex) + return 1; + + return 0; +} + + +#endif diff --git a/src/nss-myhostname/legacy.c b/src/nss-myhostname/legacy.c new file mode 100644 index 0000000000..9c0bcadb65 --- /dev/null +++ b/src/nss-myhostname/legacy.c @@ -0,0 +1,92 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of nss-myhostname. + + Copyright 2008-2011 Lennart Poettering + Copyright 2011 Robert millan + + nss-myhostname is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License + as published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + nss-myhostname is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with nss-myhostname; If not, see + . +***/ + +#include +#include +#include +#include +#include +#include + +#include "ifconf.h" + +int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) { + struct address *list = NULL; + unsigned n_list = 0; + struct ifaddrs *ifa = NULL; + int r = 1; + struct ifaddrs *i; + int ifindex = 0; + + if (getifaddrs(&ifa) == -1) { + r = -errno; + goto finish; + } + + for (i = ifa; i != NULL; i = i->ifa_next) { + int af; + const void *cp; + struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) i->ifa_addr; + struct sockaddr_in *in = (struct sockaddr_in *) i->ifa_addr; + + if (! i->ifa_addr) + continue; + + af = i->ifa_addr->sa_family; + + if (af != AF_INET && af != AF_INET6) + continue; + + list = realloc(list, (n_list+1) * sizeof(struct address)); + if (!list) { + r = -ENOMEM; + goto finish; + } + + if (af == AF_INET6) + cp = &in6->sin6_addr; + else + cp = &in->sin_addr; + + list[n_list].family = af; + list[n_list].scope = 0; + memcpy(list[n_list].address, cp, PROTO_ADDRESS_SIZE(af)); + list[n_list].ifindex = ifindex++; + n_list++; + } + +finish: + if (ifa) + freeifaddrs(ifa); + + if (r < 0) + free(list); + else { + qsort(list, n_list, sizeof(struct address), address_compare); + + *_list = list; + *_n_list = n_list; + } + + return r; +} diff --git a/src/nss-myhostname/m4/attributes.m4 b/src/nss-myhostname/m4/attributes.m4 new file mode 100644 index 0000000000..9c4a0c89a5 --- /dev/null +++ b/src/nss-myhostname/m4/attributes.m4 @@ -0,0 +1,258 @@ +dnl Macros to check the presence of generic (non-typed) symbols. +dnl Copyright (c) 2006-2007 Diego Pettenò +dnl Copyright (c) 2006-2007 xine project +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +dnl 02110-1301, USA. +dnl +dnl As a special exception, the copyright owners of the +dnl macro gives unlimited permission to copy, distribute and modify the +dnl configure scripts that are the output of Autoconf when processing the +dnl Macro. You need not follow the terms of the GNU General Public +dnl License when using or distributing such scripts, even though portions +dnl of the text of the Macro appear in them. The GNU General Public +dnl License (GPL) does govern all other use of the material that +dnl constitutes the Autoconf Macro. +dnl +dnl This special exception to the GPL applies to versions of the +dnl Autoconf Macro released by this project. When you make and +dnl distribute a modified version of the Autoconf Macro, you may extend +dnl this special exception to the GPL to apply to your modified version as +dnl well. + +AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [ + AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]), + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $1" + AC_COMPILE_IFELSE([int a;], + [eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"], + [eval "AS_TR_SH([cc_cv_cflags_$1])='no'"]) + CFLAGS="$ac_save_CFLAGS" + ]) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes], + [$2], [$3]) +]) + +AC_DEFUN([CC_CHECK_CFLAGS], [ + AC_CACHE_CHECK([if $CC supports $1 flag], + AS_TR_SH([cc_cv_cflags_$1]), + CC_CHECK_CFLAGS_SILENT([$1]) dnl Don't execute actions here! + ) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes], + [$2], [$3]) +]) + +AC_DEFUN([CC_CHECK_LDFLAGS], [ + AC_CACHE_CHECK([if $CC supports $1 flag], + AS_TR_SH([cc_cv_ldflags_$1]), + [ac_save_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS $1" + AC_LINK_IFELSE([int main() { return 1; }], + [eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"], + [eval "AS_TR_SH([cc_cv_ldflags_$1])="]) + LDFLAGS="$ac_save_LDFLAGS" + ]) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_ldflags_$1])[ = xyes], + [$2], [$3]) +]) + +dnl Check for a -Werror flag or equivalent. -Werror is the GCC +dnl and ICC flag that tells the compiler to treat all the warnings +dnl as fatal. We usually need this option to make sure that some +dnl constructs (like attributes) are not simply ignored. +dnl +dnl Other compilers don't support -Werror per se, but they support +dnl an equivalent flag: +dnl - Sun Studio compiler supports -errwarn=%all +AC_DEFUN([CC_CHECK_WERROR], [ + AC_CACHE_CHECK( + [for $CC way to treat warnings as errors], + [cc_cv_werror], + [CC_CHECK_CFLAGS_SILENT([-Werror], [cc_cv_werror=-Werror], + [CC_CHECK_CFLAGS_SILENT([-errwarn=%all], [cc_cv_werror=-errwarn=%all])]) + ]) +]) + +AC_DEFUN([CC_CHECK_ATTRIBUTE], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([if $CC supports __attribute__(( ifelse([$2], , [$1], [$2]) ))], + AS_TR_SH([cc_cv_attribute_$1]), + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + AC_COMPILE_IFELSE([$3], + [eval "AS_TR_SH([cc_cv_attribute_$1])='yes'"], + [eval "AS_TR_SH([cc_cv_attribute_$1])='no'"]) + CFLAGS="$ac_save_CFLAGS" + ]) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_attribute_$1])[ = xyes], + [AC_DEFINE( + AS_TR_CPP([SUPPORT_ATTRIBUTE_$1]), 1, + [Define this if the compiler supports __attribute__(( ifelse([$2], , [$1], [$2]) ))] + ) + $4], + [$5]) +]) + +AC_DEFUN([CC_ATTRIBUTE_CONSTRUCTOR], [ + CC_CHECK_ATTRIBUTE( + [constructor],, + [void __attribute__((constructor)) ctor() { int a; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_FORMAT], [ + CC_CHECK_ATTRIBUTE( + [format], [format(printf, n, n)], + [void __attribute__((format(printf, 1, 2))) printflike(const char *fmt, ...) { fmt = (void *)0; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_FORMAT_ARG], [ + CC_CHECK_ATTRIBUTE( + [format_arg], [format_arg(printf)], + [char *__attribute__((format_arg(1))) gettextlike(const char *fmt) { fmt = (void *)0; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_VISIBILITY], [ + CC_CHECK_ATTRIBUTE( + [visibility_$1], [visibility("$1")], + [void __attribute__((visibility("$1"))) $1_function() { }], + [$2], [$3]) +]) + +AC_DEFUN([CC_ATTRIBUTE_NONNULL], [ + CC_CHECK_ATTRIBUTE( + [nonnull], [nonnull()], + [void __attribute__((nonnull())) some_function(void *foo, void *bar) { foo = (void*)0; bar = (void*)0; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_UNUSED], [ + CC_CHECK_ATTRIBUTE( + [unused], , + [void some_function(void *foo, __attribute__((unused)) void *bar);], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_SENTINEL], [ + CC_CHECK_ATTRIBUTE( + [sentinel], , + [void some_function(void *foo, ...) __attribute__((sentinel));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_DEPRECATED], [ + CC_CHECK_ATTRIBUTE( + [deprecated], , + [void some_function(void *foo, ...) __attribute__((deprecated));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_ALIAS], [ + CC_CHECK_ATTRIBUTE( + [alias], [weak, alias], + [void other_function(void *foo) { } + void some_function(void *foo) __attribute__((weak, alias("other_function")));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_MALLOC], [ + CC_CHECK_ATTRIBUTE( + [malloc], , + [void * __attribute__((malloc)) my_alloc(int n);], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_PACKED], [ + CC_CHECK_ATTRIBUTE( + [packed], , + [struct astructure { char a; int b; long c; void *d; } __attribute__((packed));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_CONST], [ + CC_CHECK_ATTRIBUTE( + [const], , + [int __attribute__((const)) twopow(int n) { return 1 << n; } ], + [$1], [$2]) +]) + +AC_DEFUN([CC_FLAG_VISIBILITY], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([if $CC supports -fvisibility=hidden], + [cc_cv_flag_visibility], + [cc_flag_visibility_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + CC_CHECK_CFLAGS_SILENT([-fvisibility=hidden], + cc_cv_flag_visibility='yes', + cc_cv_flag_visibility='no') + CFLAGS="$cc_flag_visibility_save_CFLAGS"]) + + AS_IF([test "x$cc_cv_flag_visibility" = "xyes"], + [AC_DEFINE([SUPPORT_FLAG_VISIBILITY], 1, + [Define this if the compiler supports the -fvisibility flag]) + $1], + [$2]) +]) + +AC_DEFUN([CC_FUNC_EXPECT], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([if compiler has __builtin_expect function], + [cc_cv_func_expect], + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + AC_COMPILE_IFELSE( + [int some_function() { + int a = 3; + return (int)__builtin_expect(a, 3); + }], + [cc_cv_func_expect=yes], + [cc_cv_func_expect=no]) + CFLAGS="$ac_save_CFLAGS" + ]) + + AS_IF([test "x$cc_cv_func_expect" = "xyes"], + [AC_DEFINE([SUPPORT__BUILTIN_EXPECT], 1, + [Define this if the compiler supports __builtin_expect() function]) + $1], + [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_ALIGNED], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([highest __attribute__ ((aligned ())) supported], + [cc_cv_attribute_aligned], + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + for cc_attribute_align_try in 64 32 16 8 4 2; do + AC_COMPILE_IFELSE([ + int main() { + static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0; + return c; + }], [cc_cv_attribute_aligned=$cc_attribute_align_try; break]) + done + CFLAGS="$ac_save_CFLAGS" + ]) + + if test "x$cc_cv_attribute_aligned" != "x"; then + AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX], [$cc_cv_attribute_aligned], + [Define the highest alignment supported]) + fi +]) diff --git a/src/nss-myhostname/m4/zp_lynx_doc.m4 b/src/nss-myhostname/m4/zp_lynx_doc.m4 new file mode 100644 index 0000000000..955a6ca0af --- /dev/null +++ b/src/nss-myhostname/m4/zp_lynx_doc.m4 @@ -0,0 +1,24 @@ +dnl Macro for enabling LYNX-based documentation generation + +AC_DEFUN([ZP_LYNX_DOC], [ + AC_ARG_ENABLE(lynx, + AS_HELP_STRING([--disable-lynx], + [Turn off lynx usage for documentation generation]),, + [enable_lynx=yes]) + + case "${enable_lynx}" in + yes) + AC_CHECK_PROG(have_lynx, lynx, yes, no) + + if test x$have_lynx = xno ; then + AC_MSG_WARN([*** lynx not found, plain text README will not be built ***]) + fi + ;; + no) + have_lynx=no ;; + *) + AC_MSG_ERROR(bad value ${enableval} for --disable-lynx) ;; + esac + + AM_CONDITIONAL([USE_LYNX], [test "x$have_lynx" = xyes]) +]) diff --git a/src/nss-myhostname/netlink.c b/src/nss-myhostname/netlink.c new file mode 100644 index 0000000000..29f38e3a00 --- /dev/null +++ b/src/nss-myhostname/netlink.c @@ -0,0 +1,209 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of nss-myhostname. + + Copyright 2008-2011 Lennart Poettering + + nss-myhostname is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License + as published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + nss-myhostname is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with nss-myhostname; If not, see + . +***/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ifconf.h" + +int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) { + + struct { + struct nlmsghdr hdr; + struct rtgenmsg gen; + } req; + struct rtgenmsg *gen; + int fd, r, on = 1; + uint32_t seq = 4711; + struct address *list = NULL; + unsigned n_list = 0; + + fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE); + if (fd < 0) + return -errno; + + if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)) < 0) { + r = -errno; + goto finish; + } + + memset(&req, 0, sizeof(req)); + req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg)); + req.hdr.nlmsg_type = RTM_GETADDR; + req.hdr.nlmsg_flags = NLM_F_REQUEST|NLM_F_DUMP|NLM_F_ACK; + req.hdr.nlmsg_seq = seq; + req.hdr.nlmsg_pid = 0; + + gen = NLMSG_DATA(&req.hdr); + gen->rtgen_family = AF_UNSPEC; + + if (send(fd, &req, req.hdr.nlmsg_len, 0) < 0) { + r = -errno; + goto finish; + } + + for (;;) { + ssize_t bytes; + struct msghdr msg; + struct cmsghdr *cmsg; + struct ucred *ucred; + struct iovec iov; + struct nlmsghdr *p; + uint8_t cred_buffer[CMSG_SPACE(sizeof(struct ucred))]; + struct { + struct nlmsghdr hdr; + struct ifaddrmsg ifaddrmsg; + uint8_t payload[16*1024]; + } resp; + + memset(&iov, 0, sizeof(iov)); + iov.iov_base = &resp; + iov.iov_len = sizeof(resp); + + memset(&msg, 0, sizeof(msg)); + msg.msg_name = NULL; + msg.msg_namelen = 0; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + msg.msg_control = cred_buffer; + msg.msg_controllen = sizeof(cred_buffer); + msg.msg_flags = 0; + + bytes = recvmsg(fd, &msg, 0); + if (bytes < 0) { + r = -errno; + goto finish; + } + + cmsg = CMSG_FIRSTHDR(&msg); + if (!cmsg || cmsg->cmsg_type != SCM_CREDENTIALS) { + r = -EIO; + goto finish; + } + + ucred = (struct ucred*) CMSG_DATA(cmsg); + if (ucred->uid != 0 || ucred->pid != 0) + continue; + + for (p = &resp.hdr; bytes > 0; p = NLMSG_NEXT(p, bytes)) { + struct ifaddrmsg *ifaddrmsg; + struct rtattr *a; + size_t l; + void *local = NULL, *address = NULL; + + if (!NLMSG_OK(p, (size_t) bytes)) { + r = -EIO; + goto finish; + } + + if (p->nlmsg_seq != seq) + continue; + + if (p->nlmsg_type == NLMSG_DONE) { + r = 0; + goto finish; + } + + if (p->nlmsg_type == NLMSG_ERROR) { + struct nlmsgerr *nlmsgerr; + + nlmsgerr = NLMSG_DATA(p); + r = -nlmsgerr->error; + goto finish; + } + + if (p->nlmsg_type != RTM_NEWADDR) + continue; + + ifaddrmsg = NLMSG_DATA(p); + + if (ifaddrmsg->ifa_family != AF_INET && + ifaddrmsg->ifa_family != AF_INET6) + continue; + + if (ifaddrmsg->ifa_scope == RT_SCOPE_HOST || + ifaddrmsg->ifa_scope == RT_SCOPE_NOWHERE) + continue; + + if (ifaddrmsg->ifa_flags & IFA_F_DEPRECATED) + continue; + + l = NLMSG_PAYLOAD(p, sizeof(struct ifaddrmsg)); + a = IFA_RTA(ifaddrmsg); + + while (RTA_OK(a, l)) { + + if (a->rta_type == IFA_ADDRESS) + address = RTA_DATA(a); + else if (a->rta_type == IFA_LOCAL) + local = RTA_DATA(a); + + a = RTA_NEXT(a, l); + } + + if (local) + address = local; + + if (!address) + continue; + + list = realloc(list, (n_list+1) * sizeof(struct address)); + if (!list) { + r = -ENOMEM; + goto finish; + } + + list[n_list].family = ifaddrmsg->ifa_family; + list[n_list].scope = ifaddrmsg->ifa_scope; + memcpy(list[n_list].address, address, ifaddrmsg->ifa_family == AF_INET ? 4 : 16); + list[n_list].ifindex = ifaddrmsg->ifa_index; + + n_list++; + } + } + +finish: + close(fd); + + if (r < 0) + free(list); + else { + qsort(list, n_list, sizeof(struct address), address_compare); + + *_list = list; + *_n_list = n_list; + } + + return r; +} diff --git a/src/nss-myhostname/nss-myhostname.c b/src/nss-myhostname/nss-myhostname.c new file mode 100644 index 0000000000..83180ad805 --- /dev/null +++ b/src/nss-myhostname/nss-myhostname.c @@ -0,0 +1,451 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of nss-myhostname. + + Copyright 2008-2011 Lennart Poettering + + nss-myhostname is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License + as published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + nss-myhostname is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with nss-myhostname; If not, see + . +***/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ifconf.h" + +/* We use 127.0.0.2 as IPv4 address. This has the advantage over + * 127.0.0.1 that it can be translated back to the local hostname. For + * IPv6 we use ::1 which unfortunately will not translate back to the + * hostname but instead something like "localhost6" or so. */ + +#define LOCALADDRESS_IPV4 (htonl(0x7F000002)) +#define LOCALADDRESS_IPV6 &in6addr_loopback +#define LOOPBACK_INTERFACE "lo" + +#define ALIGN(a) (((a+sizeof(void*)-1)/sizeof(void*))*sizeof(void*)) + +enum nss_status _nss_myhostname_gethostbyname4_r( + const char *name, + struct gaih_addrtuple **pat, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp) _public_; + +enum nss_status _nss_myhostname_gethostbyname3_r( + const char *name, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp, + char **canonp) _public_; + +enum nss_status _nss_myhostname_gethostbyname2_r( + const char *name, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop) _public_; + +enum nss_status _nss_myhostname_gethostbyname_r( + const char *name, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop) _public_; + +enum nss_status _nss_myhostname_gethostbyaddr2_r( + const void* addr, socklen_t len, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp) _public_; + +enum nss_status _nss_myhostname_gethostbyaddr_r( + const void* addr, socklen_t len, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop) _public_; + +enum nss_status _nss_myhostname_gethostbyname4_r( + const char *name, + struct gaih_addrtuple **pat, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp) { + + unsigned lo_ifi; + char hn[HOST_NAME_MAX+1]; + size_t l, idx, ms; + char *r_name; + struct gaih_addrtuple *r_tuple, *r_tuple_prev = NULL; + struct address *addresses = NULL, *a; + unsigned n_addresses = 0, n; + + memset(hn, 0, sizeof(hn)); + if (gethostname(hn, sizeof(hn)-1) < 0) { + *errnop = errno; + *h_errnop = NO_RECOVERY; + return NSS_STATUS_UNAVAIL; + } + + if (strcasecmp(name, hn) != 0) { + *errnop = ENOENT; + *h_errnop = HOST_NOT_FOUND; + return NSS_STATUS_NOTFOUND; + } + + /* If this fails, n_addresses is 0. Which is fine */ + ifconf_acquire_addresses(&addresses, &n_addresses); + + /* If this call fails we fill in 0 as scope. Which is fine */ + lo_ifi = if_nametoindex(LOOPBACK_INTERFACE); + + l = strlen(hn); + ms = ALIGN(l+1)+ALIGN(sizeof(struct gaih_addrtuple))*(n_addresses > 0 ? n_addresses : 2); + if (buflen < ms) { + *errnop = ENOMEM; + *h_errnop = NO_RECOVERY; + free(addresses); + return NSS_STATUS_TRYAGAIN; + } + + /* First, fill in hostname */ + r_name = buffer; + memcpy(r_name, hn, l+1); + idx = ALIGN(l+1); + + if (n_addresses <= 0) { + /* Second, fill in IPv6 tuple */ + r_tuple = (struct gaih_addrtuple*) (buffer + idx); + r_tuple->next = r_tuple_prev; + r_tuple->name = r_name; + r_tuple->family = AF_INET6; + memcpy(r_tuple->addr, LOCALADDRESS_IPV6, 16); + r_tuple->scopeid = (uint32_t) lo_ifi; + + idx += ALIGN(sizeof(struct gaih_addrtuple)); + r_tuple_prev = r_tuple; + + /* Third, fill in IPv4 tuple */ + r_tuple = (struct gaih_addrtuple*) (buffer + idx); + r_tuple->next = r_tuple_prev; + r_tuple->name = r_name; + r_tuple->family = AF_INET; + *(uint32_t*) r_tuple->addr = LOCALADDRESS_IPV4; + r_tuple->scopeid = (uint32_t) lo_ifi; + + idx += ALIGN(sizeof(struct gaih_addrtuple)); + r_tuple_prev = r_tuple; + } + + /* Fourth, fill actual addresses in, but in backwards order */ + for (a = addresses + n_addresses - 1, n = 0; n < n_addresses; n++, a--) { + r_tuple = (struct gaih_addrtuple*) (buffer + idx); + r_tuple->next = r_tuple_prev; + r_tuple->name = r_name; + r_tuple->family = a->family; + r_tuple->scopeid = a->ifindex; + memcpy(r_tuple->addr, a->address, 16); + + idx += ALIGN(sizeof(struct gaih_addrtuple)); + r_tuple_prev = r_tuple; + } + + /* Verify the size matches */ + assert(idx == ms); + + *pat = r_tuple_prev; + + if (ttlp) + *ttlp = 0; + + free(addresses); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status fill_in_hostent( + const char *hn, + int af, + struct hostent *result, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp, + char **canonp) { + + size_t l, idx, ms; + char *r_addr, *r_name, *r_aliases, *r_addr_list; + size_t alen; + struct address *addresses = NULL, *a; + unsigned n_addresses = 0, n, c; + + alen = PROTO_ADDRESS_SIZE(af); + + ifconf_acquire_addresses(&addresses, &n_addresses); + + for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++) + if (af == a->family) + c++; + + l = strlen(hn); + ms = ALIGN(l+1)+ + sizeof(char*)+ + (c > 0 ? c : 1)*ALIGN(alen)+ + (c > 0 ? c+1 : 2)*sizeof(char*); + + if (buflen < ms) { + *errnop = ENOMEM; + *h_errnop = NO_RECOVERY; + free(addresses); + return NSS_STATUS_TRYAGAIN; + } + + /* First, fill in hostname */ + r_name = buffer; + memcpy(r_name, hn, l+1); + idx = ALIGN(l+1); + + /* Second, create (empty) aliases array */ + r_aliases = buffer + idx; + *(char**) r_aliases = NULL; + idx += sizeof(char*); + + /* Third, add addresses */ + r_addr = buffer + idx; + if (c > 0) { + unsigned i = 0; + + for (a = addresses, n = 0; n < n_addresses; a++, n++) { + if (af != a->family) + continue; + + memcpy(r_addr + i*ALIGN(alen), a->address, alen); + i++; + } + + assert(i == c); + idx += c*ALIGN(alen); + } else { + if (af == AF_INET) + *(uint32_t*) r_addr = LOCALADDRESS_IPV4; + else + memcpy(r_addr, LOCALADDRESS_IPV6, 16); + + idx += ALIGN(alen); + } + + /* Fourth, add address pointer array */ + r_addr_list = buffer + idx; + if (c > 0) { + unsigned i = 0; + + for (a = addresses, n = 0; n < n_addresses; a++, n++) { + if (af != a->family) + continue; + + ((char**) r_addr_list)[i] = (r_addr + i*ALIGN(alen)); + i++; + } + + assert(i == c); + ((char**) r_addr_list)[c] = NULL; + idx += (c+1)*sizeof(char*); + + } else { + ((char**) r_addr_list)[0] = r_addr; + ((char**) r_addr_list)[1] = NULL; + idx += 2*sizeof(char*); + } + + /* Verify the size matches */ + assert(idx == ms); + + result->h_name = r_name; + result->h_aliases = (char**) r_aliases; + result->h_addrtype = af; + result->h_length = alen; + result->h_addr_list = (char**) r_addr_list; + + if (ttlp) + *ttlp = 0; + + if (canonp) + *canonp = r_name; + + free(addresses); + + return NSS_STATUS_SUCCESS; +} + +enum nss_status _nss_myhostname_gethostbyname3_r( + const char *name, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp, + char **canonp) { + + char hn[HOST_NAME_MAX+1]; + + if (af == AF_UNSPEC) + af = AF_INET; + + if (af != AF_INET && af != AF_INET6) { + *errnop = EAFNOSUPPORT; + *h_errnop = NO_DATA; + return NSS_STATUS_UNAVAIL; + } + + memset(hn, 0, sizeof(hn)); + if (gethostname(hn, sizeof(hn)-1) < 0) { + *errnop = errno; + *h_errnop = NO_RECOVERY; + return NSS_STATUS_UNAVAIL; + } + + if (strcasecmp(name, hn) != 0) { + *errnop = ENOENT; + *h_errnop = HOST_NOT_FOUND; + return NSS_STATUS_NOTFOUND; + } + + return fill_in_hostent(hn, af, host, buffer, buflen, errnop, h_errnop, ttlp, canonp); +} + +enum nss_status _nss_myhostname_gethostbyname2_r( + const char *name, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop) { + + return _nss_myhostname_gethostbyname3_r( + name, + af, + host, + buffer, buflen, + errnop, h_errnop, + NULL, + NULL); +} + +enum nss_status _nss_myhostname_gethostbyname_r( + const char *name, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop) { + + return _nss_myhostname_gethostbyname3_r( + name, + AF_UNSPEC, + host, + buffer, buflen, + errnop, h_errnop, + NULL, + NULL); +} + +enum nss_status _nss_myhostname_gethostbyaddr2_r( + const void* addr, socklen_t len, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop, + int32_t *ttlp) { + + char hn[HOST_NAME_MAX+1]; + struct address *addresses = NULL, *a; + unsigned n_addresses = 0, n; + + if (len != PROTO_ADDRESS_SIZE(af)) { + *errnop = EINVAL; + *h_errnop = NO_RECOVERY; + return NSS_STATUS_UNAVAIL; + } + + if (af == AF_INET) { + + if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4) + goto found; + + } else if (af == AF_INET6) { + + if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0) + goto found; + + } else { + *errnop = EAFNOSUPPORT; + *h_errnop = NO_DATA; + return NSS_STATUS_UNAVAIL; + } + + ifconf_acquire_addresses(&addresses, &n_addresses); + + for (a = addresses, n = 0; n < n_addresses; n++, a++) { + if (af != a->family) + continue; + + if (memcmp(addr, a->address, PROTO_ADDRESS_SIZE(af)) == 0) + goto found; + } + + *errnop = ENOENT; + *h_errnop = HOST_NOT_FOUND; + + free(addresses); + return NSS_STATUS_NOTFOUND; + +found: + free(addresses); + + memset(hn, 0, sizeof(hn)); + if (gethostname(hn, sizeof(hn)-1) < 0) { + *errnop = errno; + *h_errnop = NO_RECOVERY; + + return NSS_STATUS_UNAVAIL; + } + + return fill_in_hostent(hn, af, host, buffer, buflen, errnop, h_errnop, ttlp, NULL); + +} + +enum nss_status _nss_myhostname_gethostbyaddr_r( + const void* addr, socklen_t len, + int af, + struct hostent *host, + char *buffer, size_t buflen, + int *errnop, int *h_errnop) { + + return _nss_myhostname_gethostbyaddr2_r( + addr, len, + af, + host, + buffer, buflen, + errnop, h_errnop, + NULL); +} -- cgit v1.2.3-54-g00ecf